sna: Fix dirtyfb detection

Fix the accidentally swapped bpp and depth values passed to
the addfb ioctl when we're testing for dirtyfb presence.
Currently the addfb fails every time so we don't even test
the actual dirtyfb ioctl.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

src/sna/kgem.c

@@ -1538,8 +1538,8 @@ static bool test_has_dirtyfb(struct kgem *kgem)
 	create.width = 32;
 	create.height = 32;
 	create.pitch = 4*32;
-	create.bpp = 24;
-	create.depth = 32; /* {bpp:24, depth:32} -> x8r8g8b8 */
+	create.bpp = 32;
+	create.depth = 24; /* {bpp:32, depth:24} -> x8r8g8b8 */
 	create.handle = gem_create(kgem->fd, 1);
 	if (create.handle == 0)
 		return false;