Staging: rtl8192u: ix brace, comments and space coding style issue in ieee80211.h

This is a patch to the ieee80211.h file that fixed up a brace, comments
and space Errors found by the checkpatch.pl tools.

Signed-off-by: Ruslan Pisarev <ruslan@rpisarev.org.ua>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>