drm/amd/pm: new SMC message for 2nd usb2.0 port workaround

The workaround is needed by sienna cichlid.

Signed-off-by: Evan Quan <[e-mail]>
Reviewed-by: Lijo Lazar <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/pm/inc/smu_types.h

···
        __SMU_DUMMY_MAP(SetSoftMaxCclk),                     \
 	__SMU_DUMMY_MAP(SetGpoFeaturePMask),             \
 	__SMU_DUMMY_MAP(DisallowGpo),                    \
+	__SMU_DUMMY_MAP(Enable2ndUSB20Port),             \
 
 #undef __SMU_DUMMY_MAP
 #define __SMU_DUMMY_MAP(type)	SMU_MSG_##type

drivers/gpu/drm/amd/pm/inc/smu_v11_0_7_ppsmc.h

···
 
 #define PPSMC_MSG_DisallowGpo                    0x56
 
+#define PPSMC_MSG_Enable2ndUSB20Port             0x57
+
 #define PPSMC_Message_Count                      0x58
 
 #endif

drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c

···
 	MSG_MAP(SetMGpuFanBoostLimitRpm,	PPSMC_MSG_SetMGpuFanBoostLimitRpm,     0),
 	MSG_MAP(SetGpoFeaturePMask,		PPSMC_MSG_SetGpoFeaturePMask,          0),
 	MSG_MAP(DisallowGpo,			PPSMC_MSG_DisallowGpo,                 0),
+	MSG_MAP(Enable2ndUSB20Port,		PPSMC_MSG_Enable2ndUSB20Port,          0),
 };
 
 static struct cmn2asic_mapping sienna_cichlid_clk_map[SMU_CLK_COUNT] = {