[][kernel][common][eth][Add Airoha AN8801SB 1G PHY driver v1.1.0]

[Description]
Add Airoha AN8801SB 1G PHY driver v1.1.0.

Change Log:
[2023/10/18]
* AN8801 V1.1.0
  * Support AN8801SB
  * Add debugfs for AN8801SB
  * Rename the driver name to AN8801cd

=====================================================================
&eth {
	...
	mdio: mdio-bus {
		#address-cells = <1>;
		#size-cells = <0>;

	gmac1: mac@1 {
		compatible = "mediatek,eth-mac";
		reg = <1>;
		phy-mode = "sgmii";
		phy-handle = <&phy5>;
	};

        phy5: phy@5 {
		compatible = "ethernet-phy-idc0ff.0421";
		reg = <1>;
		phy-mode = "sgmii";
		full-duplex;
		pause;
	};
=====================================================================

Without this patch, kernel cannot load up-to-date PHY driver for the
Airoha AN8801SB.

[Release-log]
N/A


Change-Id: I630f52c2eaa888864d0ab13b23a4799edc40d500
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8478796
3 files changed