ramips: Add support for Netgear EX2700

This patch adds support for the Netgear EX2700 and builds an approriate
sysupgrade image.

What's missing is the option to build a factory image flashable via the
router's stock web interface, but this approach is hindered by the fact
that u-boot operforms an additional integrity check, which expects a
uImage header in the last 64 bytes of the "kernel" partition, which
the bootloader expects to be 960k, a size exceeded by the standard
OpenWrt kernel.

Signed-off-by: Joseph C. Lehner <joseph.c.lehner@gmail.com>

SVN-Revision: 48698

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

@@ -154,6 +154,9 @@ ramips_board_detect() {
 	*"ESR-9753")
 		name="esr-9753"
 		;;
+	*"EX2700")
+		name="ex2700";
+		;;
 	*"F5D8235 v1")
 		name="f5d8235-v1"
 		;;