[PATCH] update maintainer for /dev/random

Ted has agreed to let me take over as maintainer of /dev/random and
friends.  I've gone ahead and added a line to his entry in CREDITS.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>