drm/amdgpu/gmc: make some functions static

These are not used outside of the respective gmc ip modules.
Reviewed-by: NChunming Zhou <david1.zhou@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c

@@ -97,7 +97,7 @@ int gmc_v7_0_mc_wait_for_idle(struct amdgpu_device *adev)
 	return -1;
 }
 
-void gmc_v7_0_mc_stop(struct amdgpu_device *adev,
+static void gmc_v7_0_mc_stop(struct amdgpu_device *adev,
 			     struct amdgpu_mode_mc_save *save)
 {
 	u32 blackout;
@@ -120,7 +120,7 @@ void gmc_v7_0_mc_stop(struct amdgpu_device *adev,
 	udelay(100);
 }
 
-void gmc_v7_0_mc_resume(struct amdgpu_device *adev,
+static void gmc_v7_0_mc_resume(struct amdgpu_device *adev,
 			       struct amdgpu_mode_mc_save *save)
 {
 	u32 tmp;

drivers/gpu/drm/amd/amdgpu/gmc_v7_0.h

@@ -27,10 +27,6 @@
 extern const struct amd_ip_funcs gmc_v7_0_ip_funcs;
 
 /* XXX these shouldn't be exported */
-void gmc_v7_0_mc_stop(struct amdgpu_device *adev,
-		      struct amdgpu_mode_mc_save *save);
-void gmc_v7_0_mc_resume(struct amdgpu_device *adev,
-			struct amdgpu_mode_mc_save *save);
 int gmc_v7_0_mc_wait_for_idle(struct amdgpu_device *adev);
 
 #endif

drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c

@@ -176,7 +176,7 @@ int gmc_v8_0_mc_wait_for_idle(struct amdgpu_device *adev)
 	return -1;
 }
 
-void gmc_v8_0_mc_stop(struct amdgpu_device *adev,
+static void gmc_v8_0_mc_stop(struct amdgpu_device *adev,
 			     struct amdgpu_mode_mc_save *save)
 {
 	u32 blackout;
@@ -199,7 +199,7 @@ void gmc_v8_0_mc_stop(struct amdgpu_device *adev,
 	udelay(100);
 }
 
-void gmc_v8_0_mc_resume(struct amdgpu_device *adev,
+static void gmc_v8_0_mc_resume(struct amdgpu_device *adev,
 			       struct amdgpu_mode_mc_save *save)
 {
 	u32 tmp;

drivers/gpu/drm/amd/amdgpu/gmc_v8_0.h

@@ -27,10 +27,6 @@
 extern const struct amd_ip_funcs gmc_v8_0_ip_funcs;
 
 /* XXX these shouldn't be exported */
-void gmc_v8_0_mc_stop(struct amdgpu_device *adev,
-		      struct amdgpu_mode_mc_save *save);
-void gmc_v8_0_mc_resume(struct amdgpu_device *adev,
-			struct amdgpu_mode_mc_save *save);
 int gmc_v8_0_mc_wait_for_idle(struct amdgpu_device *adev);
 
 #endif