drivers/rtc/rtc-rs5c313.c: fix spacing related issues

Fixes the following types of checkpatch issues:

  WARNING: please, no space before tabs
  ERROR: space prohibited after that open parenthesis '('
  ERROR: space prohibited before that close parenthesis ')'
  ERROR: need consistent spacing around '>>' (ctx:VxW)

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>