linux-wandboard

brcmsmac: Remove unnecessary memset casts

Remove the casts of the first argument of memset.

Neaten the style by using the sizeof the actual variable
being memset not the sizeof the type of variable.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>