ath79: teltonika-rut230: include kmod-usb-serial-option in image

Newer modems used in RUT240 (Quectel EC25 and MeiG SLM750) use the
"option" driver instead of CDC-ACM. Include it in the image too.

Signed-off-by: Lech Perczak <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/17503
Signed-off-by: Hauke Mehrtens <[email protected]>

target/linux/ath79/image/generic.mk

@@ -3064,7 +3064,7 @@ define Device/teltonika_rut230-v1
   DEVICE_MODEL := RUT230
   DEVICE_VARIANT := v1
   DEVICE_PACKAGES := kmod-usb2 kmod-usb-chipidea2 kmod-usb-acm \
-	kmod-usb-net-qmi-wwan uqmi -uboot-envtools
+	kmod-usb-net-qmi-wwan kmod-usb-serial-option uqmi -uboot-envtools
   IMAGE_SIZE := 15552k
   TPLINK_HWID := 0x32200002
   TPLINK_HWREV := 0x1