drm/amd/amdgpu: Clean up errors in amdgpu_umr.h

Fix the following errors reported by checkpatch:

spaces required around that '=' (ctx:VxV)
Signed-off-by: chenxuebing <chenxb_99091@126.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -69,12 +69,12 @@ struct amdgpu_debugfs_gprwave_data {
 };
 
 enum AMDGPU_DEBUGFS_REGS2_CMDS {
-	AMDGPU_DEBUGFS_REGS2_CMD_SET_STATE=0,
+	AMDGPU_DEBUGFS_REGS2_CMD_SET_STATE = 0,
 	AMDGPU_DEBUGFS_REGS2_CMD_SET_STATE_V2,
 };
 
 enum AMDGPU_DEBUGFS_GPRWAVE_CMDS {
-	AMDGPU_DEBUGFS_GPRWAVE_CMD_SET_STATE=0,
+	AMDGPU_DEBUGFS_GPRWAVE_CMD_SET_STATE = 0,
 };
 
 //reg2 interface