The existing Documentation/SM501.txt gives no clue what the chip is or does,
so copy the description from Kconfig help text.
Acked-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NRob Landley <rob@landley.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>