gma500: the MMU code is also generic

Move this over. In actual fact there are some underlying differences as
some devices have more MMU contexts, but for our 2D purposes we don't
actually care.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/gma500/Makefile

@@ -11,6 +11,7 @@ psb_gfx-y += gem_glue.o \
 	  gtt.o \
 	  intel_bios.o \
 	  intel_opregion.o \
+	  mmu.o \
 	  power.o \
 	  psb_drv.o \
 	  psb_intel_display.o \
@@ -19,7 +20,6 @@ psb_gfx-y += gem_glue.o \
 	  psb_intel_modes.o \
 	  psb_intel_sdvo.o \
 	  psb_lid.o \
-	  psb_mmu.o \
 	  psb_irq.o \
 	  psb_device.o \
 	  mid_bios.o