drm: Replace pitch with pitches[] in drm_framebuffer

Otherwise each driver would need to keep the information inside
their own framebuffer object structure. Also add offsets[]. BOs
on the other hand are driver specific, so those can be kept in
driver specific structures.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
index 90c5e39..15a6805 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
@@ -94,7 +94,7 @@
 			return 0;
 		fb = entry->base.crtc.fb;
 
-		return vmw_kms_write_svga(dev_priv, w, h, fb->pitch,
+		return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
 					  fb->bits_per_pixel, fb->depth);
 	}
 
@@ -102,7 +102,7 @@
 		entry = list_entry(lds->active.next, typeof(*entry), active);
 		fb = entry->base.crtc.fb;
 
-		vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch,
+		vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
 				   fb->bits_per_pixel, fb->depth);
 	}