ARM: shmobile: r8a7778: Use clks as MSTP007 parent

According to the documentation the parent clock of
MSTP007 should be clks not clkp.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --cc arch/arm/mach-shmobile/clock-r8a7778.c
Simple merge