ARM: i.MX clk: Move clock check function in common location

This patch moves clock check function in common i.MX location
and switch i.MX clk drivers to use this new function.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

diff --cc arch/arm/mach-imx/clk-imx1.c
Simple merge

diff --cc arch/arm/mach-imx/clk-imx21.c
Simple merge

diff --cc arch/arm/mach-imx/clk-imx25.c
Simple merge

diff --cc arch/arm/mach-imx/clk-imx27.c
Simple merge

diff --cc arch/arm/mach-imx/clk-imx31.c
Simple merge

diff --cc arch/arm/mach-imx/clk-imx35.c
Simple merge

diff --cc arch/arm/mach-imx/clk-imx51-imx53.c
Simple merge

diff --cc arch/arm/mach-imx/clk-imx6q.c
Simple merge

diff --cc arch/arm/mach-imx/clk-imx6sl.c
Simple merge

diff --cc arch/arm/mach-imx/clk-imx6sx.c
Simple merge

diff --cc arch/arm/mach-imx/clk-vf610.c
Simple merge

diff --cc arch/arm/mach-imx/clk.c
Simple merge

diff --cc arch/arm/mach-imx/clk.h
Simple merge