ramips: rt305x: add support for Accton WR6202 / SMCWBR11S-3GN

This patch adds support for the Accton WR6202 Mini 3G broadband router.
Full details for this device are available at
http://www.awbnetworks.com/products03.php?Fullkey=19.

This device is identical to the SMCWBR11S-3GN:
http://www.smc-asia.com/products03.php?Fullkey=210

It's also worth noting that this board has a GPIO line to control the
power to the USB port.

[juhosg:
 - fix checkpatch warnings,
 - reorder Kconfig entry,
 - merge the sysupgrade patch,
 - add GPL header]

Signed-off-by: Johnathan Boyce <jon.boyce@globalreach.eu.com>

SVN-Revision: 30434

target/linux/ramips/base-files/lib/ramips.sh

@@ -128,6 +128,9 @@ ramips_board_name() {
 	*"WR512-3GN-like router")
 		name="wr512-3gn"
 		;;
+	*"AWB WR6202")
+		name="wr6202"
+		;;
 	*)
 		name="generic"
 		;;