clocksource: sunxi: Cleanup the timer code
clocksource: sunxi: Cleanup the timer code

The timer code was not exact to some aspects, since most of this code
was written wihout any datasheet. Make the needed corrections to match
the datasheet.

Signed-off-by: Maxime Ripard <2d324f4ca95610bde432fa2af2f28cd21110687d@free-electrons.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs