gma500: kill off NUM_PIPE define

We don't want this external in case someone adds more to the hardware. We
want it out of the ABI.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/gma500/psb_drv.h b/drivers/gpu/drm/gma500/psb_drv.h
index 95677488..ffb05f2 100644
--- a/drivers/gpu/drm/gma500/psb_drv.h
+++ b/drivers/gpu/drm/gma500/psb_drv.h
@@ -258,6 +258,8 @@
 
 struct psb_ops;
 
+#define PSB_NUM_PIPE		3
+
 struct drm_psb_private {
 	struct drm_device *dev;
 	const struct psb_ops *ops;