drm/amd/powerplay: add PME smu message for raven

Used for working around an audio bug on some platforms.
Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/inc/rv_ppsmc.h

@@ -82,7 +82,8 @@
 #define PPSMC_MSG_SetSoftMaxFclkByFreq          0x33
 #define PPSMC_MSG_SetSoftMaxVcn                 0x34
 #define PPSMC_MSG_PowerGateMmHub                0x35
-#define PPSMC_Message_Count                     0x36
+#define PPSMC_MSG_SetRccPfcPmeRestoreRegister   0x36
+#define PPSMC_Message_Count                     0x37
 
 
 typedef uint16_t PPSMC_Result;