ARM: shmobile: r8a7790: Add USBHS clock support

This adds USBHS clock support.

Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --cc arch/arm/mach-shmobile/clock-r8a7790.c
Simple merge