ar71xx: fix a typo in ar71xx.sh

SVN-Revision: 18568

target/linux/ar71xx/base-files/lib/ar71xx.sh

@@ -74,7 +74,7 @@ ar71xx_board_name() {
 		name="wp543"
 		;;
 	*WNDR3700)
-		name"wndr3700"
+		name="wndr3700"
 		;;
 	*WNR2000)
 		name="wnr2000"