drm/amdgpu add ce_ram_size for interface query

Add a query for the CE ram size.  User mode drivers
will want to use this to determine how much size
of the cache on the CE.

Signed-off-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewd-by: Jammy Zhou <Jammy.Zhou@amd.com>

include/uapi/drm/amdgpu_drm.h

@@ -573,6 +573,8 @@ struct drm_amdgpu_info_device {
 	/** Page table entry - fragment size */
 	uint32_t pte_fragment_size;
 	uint32_t gart_page_size;
+	/** constant engine ram size*/
+	uint32_t ce_ram_size;
 };
 
 struct drm_amdgpu_info_hw_ip {