drm/amdgpu: move getting pcie info to common code

No need to replicate it in several places.

Reviewed-by: Rex Zhu <rezhu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/soc15.c

@@ -691,8 +691,6 @@ static int soc15_common_early_init(void *handle)
 		xgpu_ai_mailbox_set_irq_funcs(adev);
 	}
 
-	amdgpu_device_get_pcie_info(adev);
-
 	return 0;
 }