drm/radeon/cik: Move 'si_*()'s prototypes to shared header

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

 drivers/gpu/drm/radeon/si.c:4186:6: warning: no previous prototype for ‘si_vram_gtt_location’ [-Wmissing-prototypes]
 4186 | void si_vram_gtt_location(struct radeon_device *rdev,
 | ^~~~~~~~~~~~~~~~~~~~
 drivers/gpu/drm/radeon/si.c:5186:6: warning: no previous prototype for ‘si_init_uvd_internal_cg’ [-Wmissing-prototypes]
 5186 | void si_init_uvd_internal_cg(struct radeon_device *rdev)
 | ^~~~~~~~~~~~~~~~~~~~~~~
 drivers/gpu/drm/radeon/si.c:5801:6: warning: no previous prototype for ‘si_rlc_reset’ [-Wmissing-prototypes]
 5801 | void si_rlc_reset(struct radeon_device *rdev)
 | ^~~~~~~~~~~~

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: Sumit Semwal <sumit.semwal@linaro.org>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/cik.c

@@ -40,6 +40,7 @@
 #include "radeon_asic.h"
 #include "radeon_audio.h"
 #include "radeon_ucode.h"
+#include "si.h"
 
 #define SH_MEM_CONFIG_GFX_DEFAULT \
 	ALIGNMENT_MODE(SH_MEM_ALIGNMENT_MODE_UNALIGNED)
@@ -127,9 +128,6 @@ MODULE_FIRMWARE("radeon/mullins_mec.bin");
 MODULE_FIRMWARE("radeon/mullins_rlc.bin");
 MODULE_FIRMWARE("radeon/mullins_sdma.bin");
 
-extern void si_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc);
-extern void si_rlc_reset(struct radeon_device *rdev);
-extern void si_init_uvd_internal_cg(struct radeon_device *rdev);
 static u32 cik_get_cu_active_bitmap(struct radeon_device *rdev, u32 se, u32 sh);
 extern int cik_sdma_resume(struct radeon_device *rdev);
 extern void cik_sdma_enable(struct radeon_device *rdev, bool enable);

drivers/gpu/drm/radeon/si.h

@@ -25,8 +25,12 @@
 #define __SI_H__
 
 struct radeon_device;
+struct radeon_mc;
 
 int si_mc_load_microcode(struct radeon_device *rdev);
 u32 si_gpu_check_soft_reset(struct radeon_device *rdev);
+void si_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc);
+void si_rlc_reset(struct radeon_device *rdev);
+void si_init_uvd_internal_cg(struct radeon_device *rdev);
 
 #endif                         /* __SI_H__ */