drm/amdkfd: workaround address watch clearing bug for gfx v9.4.2

KFD currently relies on MEC FW to clear tcp watch control
register on UNMAP_PROCESS, but FW doesn't work on it,
which is a bug. So the solution is to clear the register
as gfx v9 in KFD.
Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Reviewed-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -163,12 +163,6 @@ static uint32_t kgd_gfx_aldebaran_set_address_watch(
 	return watch_address_cntl;
 }
 
-static uint32_t kgd_gfx_aldebaran_clear_address_watch(struct amdgpu_device *adev,
-						      uint32_t watch_id)
-{
-	return 0;
-}
-
 const struct kfd2kgd_calls aldebaran_kfd2kgd = {
 	.program_sh_mem_settings = kgd_gfx_v9_program_sh_mem_settings,
 	.set_pasid_vmid_mapping = kgd_gfx_v9_set_pasid_vmid_mapping,
@@ -193,7 +187,7 @@ const struct kfd2kgd_calls aldebaran_kfd2kgd = {
 	.set_wave_launch_trap_override = kgd_aldebaran_set_wave_launch_trap_override,
 	.set_wave_launch_mode = kgd_aldebaran_set_wave_launch_mode,
 	.set_address_watch = kgd_gfx_aldebaran_set_address_watch,
-	.clear_address_watch = kgd_gfx_aldebaran_clear_address_watch,
+	.clear_address_watch = kgd_gfx_v9_clear_address_watch,
 	.get_iq_wait_times = kgd_gfx_v9_get_iq_wait_times,
 	.build_grace_period_packet_info = kgd_gfx_v9_build_grace_period_packet_info,
 	.program_trap_handler_settings = kgd_gfx_v9_program_trap_handler_settings,