drm/amd: Make amd_ip_funcs static for SDMA v5.2

The struct can be static, as it is only used in this
translation unit.

Signed-off-by: Tobias Jakobi <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c

···
 	amdgpu_gfx_off_ctrl(adev, true);
 }
 
-const struct amd_ip_funcs sdma_v5_2_ip_funcs = {
+static const struct amd_ip_funcs sdma_v5_2_ip_funcs = {
 	.name = "sdma_v5_2",
 	.early_init = sdma_v5_2_early_init,
 	.late_init = NULL,

drivers/gpu/drm/amd/amdgpu/sdma_v5_2.h

···
 #ifndef __SDMA_V5_2_H__
 #define __SDMA_V5_2_H__
 
-extern const struct amd_ip_funcs sdma_v5_2_ip_funcs;
 extern const struct amdgpu_ip_block_version sdma_v5_2_ip_block;
 
 #endif /* __SDMA_V5_2_H__ */