Fix firmware path at gles-user-module

Fix firmware path at gles-user-module

At commit 4f5cf5dc8de803407fa9d3ffa13994309edde985 in meta-agl change
firmware installation path /lib/firmware to
${nonarch_base_libdir}/firmware.
The gles-user-module.bbappend of meta-agl-lxc has divided firmware
only package from library packages.

This patch fix firmware installation path in file lists, that is
firmware only package.

Bug-AGL : SPEC-4394

Signed-off-by: Naoto Yamaguchi <naoto.yamaguchi@aisin.co.jp>
Change-Id: I638885b97db50aa8beac2f2df31ab6d52e44c831