drm/amd/amdgpu/vcn_v2_0: Fix a few kernel-doc misdemeanours

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:483: warning: Excess function parameter 'sw' description in 'vcn_v2_0_disable_clock_gating'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:644: warning: Excess function parameter 'sw' description in 'vcn_v2_0_enable_clock_gating'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1404: warning: Function parameter or member 'count' not described in 'vcn_v2_0_dec_ring_insert_nop'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1426: warning: Function parameter or member 'addr' not described in 'vcn_v2_0_dec_ring_emit_fence'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1426: warning: Function parameter or member 'seq' not described in 'vcn_v2_0_dec_ring_emit_fence'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1426: warning: Function parameter or member 'flags' not described in 'vcn_v2_0_dec_ring_emit_fence'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1426: warning: Excess function parameter 'fence' description in 'vcn_v2_0_dec_ring_emit_fence'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1465: warning: Function parameter or member 'job' not described in 'vcn_v2_0_dec_ring_emit_ib'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1465: warning: Function parameter or member 'flags' not described in 'vcn_v2_0_dec_ring_emit_ib'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1609: warning: Function parameter or member 'addr' not described in 'vcn_v2_0_enc_ring_emit_fence'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1609: warning: Function parameter or member 'seq' not described in 'vcn_v2_0_enc_ring_emit_fence'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1609: warning: Function parameter or member 'flags' not described in 'vcn_v2_0_enc_ring_emit_fence'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1609: warning: Excess function parameter 'fence' description in 'vcn_v2_0_enc_ring_emit_fence'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1636: warning: Function parameter or member 'job' not described in 'vcn_v2_0_enc_ring_emit_ib'
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1636: warning: Function parameter or member 'flags' not described in 'vcn_v2_0_enc_ring_emit_ib'

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c

@@ -475,7 +475,6 @@ static void vcn_v2_0_mc_resume_dpg_mode(struct amdgpu_device *adev, bool indirec
  * vcn_v2_0_disable_clock_gating - disable VCN clock gating
  *
  * @adev: amdgpu_device pointer
- * @sw: enable SW clock gating
  *
  * Disable clock gating for VCN block
  */
@@ -636,7 +635,6 @@ static void vcn_v2_0_clock_gating_dpg_mode(struct amdgpu_device *adev,
  * vcn_v2_0_enable_clock_gating - enable VCN clock gating
  *
  * @adev: amdgpu_device pointer
- * @sw: enable SW clock gating
  *
  * Enable clock gating for VCN block
  */
@@ -1397,6 +1395,7 @@ void vcn_v2_0_dec_ring_insert_end(struct amdgpu_ring *ring)
  * vcn_v2_0_dec_ring_insert_nop - insert a nop command
  *
  * @ring: amdgpu_ring pointer
+ * @count: the number of NOP packets to insert
  *
  * Write a nop command to the ring.
  */
@@ -1417,7 +1416,9 @@ void vcn_v2_0_dec_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
  * vcn_v2_0_dec_ring_emit_fence - emit an fence & trap command
  *
  * @ring: amdgpu_ring pointer
- * @fence: fence to emit
+ * @addr: address
+ * @seq: sequence number
+ * @flags: fence related flags
  *
  * Write a fence and a trap command to the ring.
  */
@@ -1454,7 +1455,9 @@ void vcn_v2_0_dec_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, u64 seq,
  * vcn_v2_0_dec_ring_emit_ib - execute indirect buffer
  *
  * @ring: amdgpu_ring pointer
+ * @job: job to retrieve vmid from
  * @ib: indirect buffer to execute
+ * @flags: unused
  *
  * Write ring commands to execute the indirect buffer
  */
@@ -1600,7 +1603,9 @@ static void vcn_v2_0_enc_ring_set_wptr(struct amdgpu_ring *ring)
  * vcn_v2_0_enc_ring_emit_fence - emit an enc fence & trap command
  *
  * @ring: amdgpu_ring pointer
- * @fence: fence to emit
+ * @addr: address
+ * @seq: sequence number
+ * @flags: fence related flags
  *
  * Write enc a fence and a trap command to the ring.
  */
@@ -1625,7 +1630,9 @@ void vcn_v2_0_enc_ring_insert_end(struct amdgpu_ring *ring)
  * vcn_v2_0_enc_ring_emit_ib - enc execute indirect buffer
  *
  * @ring: amdgpu_ring pointer
+ * @job: job to retrive vmid from
  * @ib: indirect buffer to execute
+ * @flags: unused
  *
  * Write enc ring commands to execute the indirect buffer
  */