Staging: asus_oled: fix coding style issue in asus_oled.c

This is a patch to the asus_oled.c file that fixes up brace and enum
warning found by the checkpatch.pl tool

Signed-off-by: Johan Meiring <johanmeiring@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>