rtc: rtc-max6902 fixes
rtc: rtc-max6902 fixes

- no changelogs in code
- no banners
- use local buffers
- fix probe sequence
- fixed style issues
- fix spi_write call
- removed old debug code

replaces http://patchwork.ozlabs.org/patch/9421/
and http://patchwork.ozlabs.org/patch/9455/

Signed-off-by: Alessandro Zummo <f0b9bd96bf07bfecc189c62159960134588fafe5@towertech.it>
Acked-by: David Brownell <e543181633fc0fc2787945ef377537d9112d0c96@pacbell.net>
Cc: Raphael Assenat <cdc1a1a98b37c828f72b2df5550d658c6f092848@raphnet.net>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

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