mediatek-filogic: add support for OpenWRT One (#3446)

Specification:
 - MT7981 CPU using 2.4GHz and 5GHz WiFi (both AX)
 - 1GB RAM
 - 16MB NOR
 - 128MB NAND
 - 3 LEDs (red, green, blue, white)
 - 2 buttons (reset, user defined)
 - 1 2.5Gbit WAN port (Airoha EN8811h)
 - 1 1Gbit LAN ports
 - 1 single lane M.2 SSD slot
 - 1 mikroBus socket
 - externel HW WDT (25s refresh time)
 - i2c RTC (with battery backup)

Serial Interface
 - UBS-C CDC-ACM
 - 3 Pins GND, RX, TX
 - Settings: 115200, 8N1

docs/user/supported_devices.rst

@@ -334,6 +334,10 @@ mediatek-filogic
 
   - WAX220
 
+* OpenWrt
+
+  - One
+
 * Ubiquiti
 
   - UniFi 6 Plus

targets/mediatek-filogic

+config('TARGET_ROOTFS_INITRAMFS', true)
+config('TARGET_INITRAMFS_COMPRESSION_LZMA', true)
+
 -- ASUS
 
 device('asus-tuf-ax4200', 'asus_tuf-ax4200', {
@@ -50,6 +53,13 @@ device('netgear-wax220', 'netgear_wax220', {
 	factory_ext = '.img',
 })
 
+-- OpenWRT
+device('openwrt-one', 'openwrt_one',{
+	factory = '-factory',
+	factory_ext = '.ubi',
+	sysupgrade_ext = '.itb',
+})
+
 
 -- Ubiquiti