staging: brcm80211: nicpci: Neatening

Remove unnecessary casts of void *.
Spacing and removal of unnecessary parentheses.
80 column wrapping.
Comment neatening.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>