drm/amd/powerplay: add new smu message.

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/powerplay/inc/smu7_ppsmc.h

@@ -394,6 +394,9 @@ typedef uint16_t PPSMC_Result;
 
 #define PPSMC_MSG_SetVBITimeout               ((uint16_t) 0x306)
 
+#define PPSMC_MSG_EnableDpmDidt               ((uint16_t) 0x309)
+#define PPSMC_MSG_DisableDpmDidt              ((uint16_t) 0x30A)
+
 #define PPSMC_MSG_SecureSRBMWrite             ((uint16_t) 0x600)
 #define PPSMC_MSG_SecureSRBMRead              ((uint16_t) 0x601)
 #define PPSMC_MSG_SetAddress                  ((uint16_t) 0x800)