Renesas R8A7795 is CPU with Cortex-a57.
This supports the basic register definition and GPIO and
framework of PFC.
Signed-off-by: NHiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu@nigauri.org>