gma500: framebuffer: mark psb_fb_helper_funcs as static

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/gma500/framebuffer.c

@@ -572,7 +572,7 @@ static int psbfb_probe(struct drm_fb_helper *helper,
 	return new_fb;
 }
 
-struct drm_fb_helper_funcs psb_fb_helper_funcs = {
+static struct drm_fb_helper_funcs psb_fb_helper_funcs = {
 	.gamma_set = psbfb_gamma_set,
 	.gamma_get = psbfb_gamma_get,
 	.fb_probe = psbfb_probe,