drm/radeon/dpm: Clean up errors in evergreen_smc.h

Fix the following errors reported by checkpatch:

ERROR: open brace '{' following struct go on the same line
Signed-off-by: XueBing Chen <chenxb_99091@126.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/evergreen_smc.h

@@ -29,8 +29,7 @@
 
 #define SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE 16
 
-struct SMC_Evergreen_MCRegisterAddress
-{
+struct SMC_Evergreen_MCRegisterAddress {
     uint16_t s0;
     uint16_t s1;
 };
@@ -38,15 +37,13 @@ struct SMC_Evergreen_MCRegisterAddress
 typedef struct SMC_Evergreen_MCRegisterAddress SMC_Evergreen_MCRegisterAddress;
 
 
-struct SMC_Evergreen_MCRegisterSet
-{
+struct SMC_Evergreen_MCRegisterSet {
     uint32_t value[SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE];
 };
 
 typedef struct SMC_Evergreen_MCRegisterSet SMC_Evergreen_MCRegisterSet;
 
-struct SMC_Evergreen_MCRegisters
-{
+struct SMC_Evergreen_MCRegisters {
     uint8_t                             last;
     uint8_t                             reserved[3];
     SMC_Evergreen_MCRegisterAddress     address[SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE];