drm/amdgpu: Add ReadSerial defines for Arcturus

Add the ReadSerial definitions for Arcturus to the arcturus_ppsmc.h
header for use with unique_id

Unrevert: Supported in SMU 54.23, update values to match SMU spec
Signed-off-by: NKent Russell <kent.russell@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/arcturus_ppt.c

@@ -129,6 +129,8 @@ static struct smu_11_0_msg_mapping arcturus_message_map[SMU_MSG_MAX_COUNT] = {
 	MSG_MAP(SetMemoryChannelEnable,		     PPSMC_MSG_SetMemoryChannelEnable,		0),
 	MSG_MAP(DFCstateControl,		     PPSMC_MSG_DFCstateControl,			0),
 	MSG_MAP(GmiPwrDnControl,		     PPSMC_MSG_GmiPwrDnControl,			0),
+	MSG_MAP(ReadSerialNumTop32,		     PPSMC_MSG_ReadSerialNumTop32,		1),
+	MSG_MAP(ReadSerialNumBottom32,		     PPSMC_MSG_ReadSerialNumBottom32,		1),
 };
 
 static struct smu_11_0_cmn2aisc_mapping arcturus_clk_map[SMU_CLK_COUNT] = {

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

@@ -117,6 +117,9 @@
 #define PPSMC_MSG_GmiPwrDnControl                0x3D
 #define PPSMC_Message_Count                      0x3E
 
+#define PPSMC_MSG_ReadSerialNumTop32		 0x40
+#define PPSMC_MSG_ReadSerialNumBottom32		 0x41
+
 typedef uint32_t PPSMC_Result;
 typedef uint32_t PPSMC_Msg;
 #pragma pack(pop)