drm/amdgpu: set gfx_v9_0_ip_funcs as static

We won't use this member in other files, so set it static.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

@@ -4096,7 +4096,7 @@ static int gfx_v9_0_kiq_irq(struct amdgpu_device *adev,
 	return 0;
 }
 
-const struct amd_ip_funcs gfx_v9_0_ip_funcs = {
+static const struct amd_ip_funcs gfx_v9_0_ip_funcs = {
 	.name = "gfx_v9_0",
 	.early_init = gfx_v9_0_early_init,
 	.late_init = gfx_v9_0_late_init,

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.h

@@ -24,7 +24,6 @@
 #ifndef __GFX_V9_0_H__
 #define __GFX_V9_0_H__
 
-extern const struct amd_ip_funcs gfx_v9_0_ip_funcs;
 extern const struct amdgpu_ip_block_version gfx_v9_0_ip_block;
 
 void gfx_v9_0_select_se_sh(struct amdgpu_device *adev, u32 se_num, u32 sh_num);