drm/amdgpu: add XGMI HWIP

So we can track grab the appropriate XGMI info out of the
IP discovery table.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -755,6 +755,7 @@ enum amd_hw_ip_block_type {
 	CLK_HWIP,
 	UMC_HWIP,
 	RSMU_HWIP,
+	XGMI_HWIP,
 	MAX_HWIP
 };
 

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c

@@ -128,6 +128,7 @@ static int hw_id_map[MAX_HWIP] = {
 	[THM_HWIP]	= THM_HWID,
 	[CLK_HWIP]	= CLKA_HWID,
 	[UMC_HWIP]	= UMC_HWID,
+	[XGMI_HWIP]	= XGMI_HWID,
 };
 
 static int amdgpu_discovery_read_binary(struct amdgpu_device *adev, uint8_t *binary)