staging: wlan-ng: make switch case block format consistent

For switch statements with case blocks make the format consistent by
applying K&R formatting, a space before the opening brace, single
indentation of contained code, break inside the block and closing
brace aligned with case.

Signed-off-by: Tim Collier <osdevtc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>