_find_next_bit_be() does not have a 'const' qualifier for the first 
argument, so we get the following warning for a very large number
of files:

In file included from include/linux/sched.h:15,
                 from include/linux/module.h:10,
                 from drivers/mtd/maps/ixp2000.c:24:
include/linux/cpumask.h: In function `__next_cpu':
include/linux/cpumask.h:216: warning: passing arg 1 of `_find_next_bit_be' 
discards qualifiers from pointer target type
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>