Thomas Woller's email address bounces
Nils Faerber isn't active

Added Thomas Woller to CREDITS, Nils already has an entry
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>