gallium/dri2: Don't forget protected content flag

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: bd182777c8f2c4 ("egl: implement EGL_EXT_protected_surface support")
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8094>
(cherry picked from commit d21cc94201ab1e6cb54ff33a7a835248fe336777)
2 files changed