[AGPGART] intel_agp: cleanup intel private data

Remove volatile type declare for IO mem variables.

A single private gart data is used by all drivers, this
makes it clean. Eric Anholt wrote the original patch.

Signed-off-by: Wang Zhenyu <zhenyu.z.wang@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
1 file changed