Fix typo when describing RTC_WKALM.  Add some helpful pointers to people
developing their own RTC driver.  Change a bunch of the error messages in the
test program to be a bit more helpful.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>