wwan: fix hotplug event handling

Hotplug manager send: "remove" -> "add" -> "bind" events,
script interpret bind as "not add" = "remove" and mark device
as unavailable.

Signed-off-by: Rozhuk Ivan <rozhuk.im@gmail.com>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com> [PKG_RELEASE increase]

package/network/utils/wwan/Makefile

@@ -2,7 +2,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=wwan
 PKG_VERSION:=2019-04-29
-PKG_RELEASE=4
+PKG_RELEASE=5
 
 PKG_LICENSE:=GPL-2.0
 PKG_LICENSE_FILES:=

package/network/utils/wwan/files/wwan.usbmisc

@@ -17,7 +17,8 @@ find_wwan_iface() {
 	[ -z "$device" -a "$proto" = wwan ] || [ "$device" = "/dev/$DEVNAME" ] || return 0
 	if [ "$ACTION" = add ]; then
 		proto_set_available "$cfg" 1
-	else
+	fi
+	if [ "$ACTION" = remove ]; then
 		proto_set_available "$cfg" 0
 	fi
 	exit 0