ARM: mach-shmobile: kzm9g: defconfig update

This patch enable GPIO-KEY/FSI,
and remove debug settings,
and be cleanuped by c2330e28 script

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>