ARM: mxs: remove custom .init_time hook

This patch converts clk-imx2[38] clocksource_of_init compatible init
associated with fsl,imx2[38]-clkctrl. With arch/arm calling
of_clk_init(NULL) from time_init(), we can now also remove custom
.init_time hooks.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>

diff --cc arch/arm/mach-mxs/mach-mxs.c
Simple merge

diff --cc drivers/clk/mxs/clk-imx23.c
Simple merge

diff --cc drivers/clk/mxs/clk-imx28.c
Simple merge

diff --cc include/linux/clk/mxs.h
Simple merge