* Rockchip:Fix dtsi of doornet2
phy:
Modify phy timing;The manufacturer's board requires two timing modes: 125m and 25m ---stmmac_mdio.c stmmac_main.c
Among them, stmmac_main.c is added with 1.5 reset, and the compilation of other devices is not affected
emmc:
In emmc hs400 mode, the performance test effect is the same as hs200, so it is safer to reduce hs200
* Rockchip:Add doornet2 to overclock to 2.2GHz/1.8GHz
* Create 105-rockchip-rk3399-Add-support-for-EmbedFire-DoorNet2.patch
Modify the startup method: SD starts first, which is convenient for saving bricks. If there is no system in SD, it will automatically jump to the next emmc boot
* Update with kernel 5.4
* Update 992-rockchip-rk3399-overclock-to-2.2-1.8-GHz-for-NanoPi4.patch
2b9548669a