imx6: remove unnecessary wildcard from board name matching

The wildcard used in the network config matching is not necessary
given the board names returned by imx6_board_detect() in lib/imx6.sh.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

target/linux/imx6/base-files/etc/board.d/02_network

@@ -11,17 +11,17 @@ board_config_update
 
 case "$board" in
 cubox-i |\
-*gw51xx |\
-*gw52xx |\
-*gw5904)
+gw51xx |\
+gw52xx |\
+gw5904)
 	ucidef_set_interface_lan 'eth0'
 	;;
-*gw53xx |\
-*gw54xx |\
-*gw552x)
+gw53xx |\
+gw54xx |\
+gw552x)
 	ucidef_set_interfaces_lan_wan 'eth0' 'eth1'
 	;;
-*wandboard)
+wandboard)
 	ucidef_set_interface_wan 'eth0'
 	;;
 esac