mesa: Upgrade to 10.4.3

flags for EGL and GBM Gallium had been removed in 10.4,
so remove these flags, files or packages.

Signed-off-by: Pengyu Ma <pengyu.ma@windriver.com>
Tested-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Ross Burton <ross.burton@intel.com>