watchdog: imx2_wdt: use devm_clk_get()
Use devm_clk_get() to make cleanup paths more simple. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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