ARM: i.MX: Use of_clk_get_by_name() for timer clocks for DT case.

Use of_clk_get_by_name() for timer clocks for DT case.
This patch eliminates a lot of unneeded clk_register_clkdev()
calls for GPT.

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-imx25.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/time.c
Simple merge