ARM: mach-shmobile: add bonito board support.

This adds basic bonito board (R-Mobile A1) support

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

Conflicts:
	arch/arm/mach-shmobile/Kconfig
	arch/arm/mach-shmobile/Makefile