mediatek: CMCC RAX3000M: add RAX3000Me as alt model

The devices are basically identical. The RAX3000Me can be with
ddr3 RAM.

Signed-off-by: Mikhail Zhilkin <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/19760
(cherry picked from commit 23f016cf1e76aaeb41da70c520dc65d34b5be741)
Signed-off-by: Mikhail Zhilkin <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/19991
Signed-off-by: Hauke Mehrtens <[email protected]>

target/linux/mediatek/image/filogic.mk

@@ -573,6 +573,8 @@ TARGET_DEVICES += cmcc_a10-ubootmod
 define Device/cmcc_rax3000m
   DEVICE_VENDOR := CMCC
   DEVICE_MODEL := RAX3000M
+  DEVICE_ALT0_VENDOR := CMCC
+  DEVICE_ALT0_MODEL := RAX3000Me
   DEVICE_DTS := mt7981b-cmcc-rax3000m
   DEVICE_DTS_OVERLAY := mt7981b-cmcc-rax3000m-emmc mt7981b-cmcc-rax3000m-nand
   DEVICE_DTS_DIR := ../dts