gpu-viv-bin-mx6q: fixing pkg-config files for non-x11 builds.
egl.pc and glesv1_cm.pc had 'Requires.private' on x11 libs.
This got removed from them. To keep the x11 behavior,
new x11 specific pkg-config files were added and will be installed
by gpu-viv-bin-mx6q.inc, if "X11'-DISTRO_FEATURE is present.
For uniformity reasons, the same schema got applied to glesv2.pc
Change-Id: I23c1b685d4be10119a0f90179c2e87e1db64ca05 Signed-off-by: Thomas Senyk <thomas.senyk@pelagicore.com>
