drm/amd/powerplay: add new smu message for Rv

#define PPSMC_MSG_TestMessage                   0x1

#define PPSMC_MSG_GetSmuVersion                 0x2

#define PPSMC_MSG_GetDriverIfVersion            0x3

#define PPSMC_MSG_PowerUpGfx                    0x6

#define PPSMC_MSG_EnableGfxOff                  0x7

#define PPSMC_MSG_DisableGfxOff                 0x8

#define PPSMC_MSG_PowerDownIspByTile            0x9

#define PPSMC_MSG_SetMinDisplayClock            0x11

#define PPSMC_MSG_SetHardMinFclkByFreq          0x12

#define PPSMC_MSG_SetAllowFclkSwitch            0x13

#define PPSMC_MSG_SetGfxMinActiveFreq           0x14

#define PPSMC_MSG_SetMinVideoGfxclkFreq         0x14

#define PPSMC_MSG_ActiveProcessNotify           0x15

#define PPSMC_MSG_SetCustomPolicy               0x16

#define PPSMC_MSG_SetVideoFps                   0x17

#define PPSMC_MSG_SetHardMinDcefclkByFreq       0x20

#define PPSMC_MSG_SetHardMinSocclkByFreq        0x21

#define PPSMC_MSG_SetMinVddcrSocVoltage         0x22

#define PPSMC_Message_Count                     0x23

#define PPSMC_MSG_SetMinVideoFclkFreq           0x23

#define PPSMC_MSG_SetMinDeepSleepDcefclk        0x24

#define PPSMC_Message_Count                     0x25

typedef uint16_t PPSMC_Result;

typedef int      PPSMC_Msg;