ARM: imx: initialize gpt device type for DT boot
ARM: imx: initialize gpt device type for DT boot

Use different initialization function in CLOCKSOURCE_OF_DECLARE() to
initialize gpt device type for DT boot.

Signed-off-by: Shawn Guo <912cf7eb7d8018e2943586ae6657d21fd4e38239@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs