meta-quanta: s6q: Add x86-power-ctrl config files

These config files contains the gpio configuartion which will be used by
the x86 power control.

Tested: Tested and verified in S6Q.

Change-Id: I3e2684b2d7b0e6f3c6eb874569d5c82f6b733e02
Signed-off-by: P.K.Lee <p.k.lee@quantatw.com>