usb: s3c-hsotg: Use devm_* functions in s3c-hsotg.c file
devm_* functions are used to replace kzalloc, request_mem_region, ioremap and request_irq functions in probe call. With the usage of devm_* functions explicit freeing and unmapping is not required. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
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