zd1211rw: adding Accton Technology Corp (083a:e501) as a ZD1211B device

New device supported by the zd1211rw driver reported to linux-wireless.
Device string from lsusb:
"ID 083a:e501 Accton Technology Corp. ZD1211B"

RF type from dmesg:
zd1211b chip 083a:e501 v4810 high 00-1a-2a AL2230_RF pa0 g--NS

Signed-off-by: Hin-Tak Leung <htl10@users.sourceforge.net>
Tested-by: Adrián <Cereto&lt;ssorgatem@esdebian.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>