mediatek: add support for CMCC XR30 and CMCC XR30 eMMC

Hardware specification:
SoC: MediaTek MT7981B 2x A53
Flash: GIGADEVICE GD5F1GM7UExxG  128MB or 64GB eMMC
RAM: DDR4 512MB
Ethernet: 4x 10/100/1000 Mbps
Switch: MediaTek MT7531AE
WiFi: MediaTek MT7976C
Button: Reset, Mesh
Power: DC 12V 1.5A

package/boot/uboot-envtools/files/mediatek

@@ -14,6 +14,7 @@ board=$(board_name)
 
 case "$board" in
 cmcc,rax3000m-emmc |\
+cmcc,xr30-emmc |\
 glinet,gl-mt6000 |\
 jdcloud,re-cp-03)
 	env_dev=$(find_mmc_part "u-boot-env")
@@ -29,6 +30,7 @@ livinet,zr-3020*)
 h3c,nx30pro |\
 *clt,r30b1* |\
 ruijie,rg-x60-pro* |\
+cmcc,xr30 |\
 cmcc,rax3000m)
 	ubootenv_add_uci_config "/dev/mtd2" "0x0" "0x80000" "0x20000" "4"
 	;;

package/mtk/applications/mtk-smp/files/smp.sh

@@ -755,6 +755,7 @@ setup_model()
 	xiaomi,mi-router-wr30u* |\
 	xiaomi,mi-router-ax3000t* |\
 	*rax3000m* |\
+	*cmcc,xr30* |\
 	h3c,nx30pro |\
 	*honor,fur-602* |\
 	konka,komi-a31 |\