drm/amdgpu: code style refine.

Whitespace fix.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -55,7 +55,7 @@
 #define FIRMWARE_FIJI		"amdgpu/fiji_uvd.bin"
 #define FIRMWARE_STONEY		"amdgpu/stoney_uvd.bin"
 #define FIRMWARE_POLARIS10	"amdgpu/polaris10_uvd.bin"
-#define FIRMWARE_POLARIS11         "amdgpu/polaris11_uvd.bin"
+#define FIRMWARE_POLARIS11	"amdgpu/polaris11_uvd.bin"
 
 /**
  * amdgpu_uvd_cs_ctx - Command submission parser context