drm/amd/pp: export more smu message on Rv

#define PPSMC_MSG_GetMinGfxclkFrequency         0x2C

#define PPSMC_MSG_GetMaxGfxclkFrequency         0x2D

#define PPSMC_MSG_SoftReset                     0x2E

#define PPSMC_Message_Count                     0x2F

#define PPSMC_MSG_SetSoftMaxGfxClk              0x30

#define PPSMC_MSG_SetHardMinGfxClk              0x31

#define PPSMC_MSG_SetSoftMaxSocclkByFreq        0x32

#define PPSMC_MSG_SetSoftMaxFclkByFreq          0x33

#define PPSMC_MSG_SetSoftMaxVcn                 0x34

#define PPSMC_Message_Count                     0x35

typedef uint16_t PPSMC_Result;