leds: aat1290: add 'static' modifier to init_mm_current_scale
leds: aat1290: add 'static' modifier to init_mm_current_scale

Function init_mm_current_scale is used only locally. Make it static then.

Signed-off-by: Jacek Anaszewski <6a953cb1c532e2765a42e582ecefff5a01106214@samsung.com>

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