net-next: dt-binding: dwmac-mediatek: remove fine-tune property

Optional properties:

- mediatek,tx-delay-ps: TX clock delay macro value. Default is 0.

	It should be defined for rgmii/rgmii-rxid/mii interface.

	It should be defined for RGMII/MII interface.

- mediatek,rx-delay-ps: RX clock delay macro value. Default is 0.

	It should be defined for rgmii/rgmii-txid/mii/rmii interface.

Both delay properties need to be a multiple of 170 for fine-tune rgmii,

range 0~31*170.

Both delay properties need to be a multiple of 550 for coarse-tune rgmii,

range 0~31*550.

Both delay properties need to be a multiple of 550 for mii/rmii,

range 0~31*550.

	It should be defined for RGMII/MII/RMII interface.

Both delay properties need to be a multiple of 170 for RGMII interface,

or will round down. Range 0~31*170.

Both delay properties need to be a multiple of 550 for MII/RMII interface,

or will round down. Range 0~31*550.

- mediatek,fine-tune: boolean property, if present indicates that fine delay

	is selected for rgmii interface.

	If present, tx-delay-ps/rx-delay-ps is 170+/-50ps per stage.

	Else tx-delay-ps/rx-delay-ps of coarse delay macro is 0.55+/-0.2ns per stage.

	This property do not apply to non-rgmii PHYs.

	Only coarse-tune delay is supported for mii/rmii PHYs.

- mediatek,rmii-rxc: boolean property, if present indicates that the rmii

- mediatek,rmii-rxc: boolean property, if present indicates that the RMII

	reference clock, which is from external PHYs, is connected to RXC pin

	on MT2712 SoC.

	Otherwise, is connected to TXC pin.

- mediatek,txc-inverse: boolean property, if present indicates that

	1. tx clock will be inversed in mii/rgmii case,

	1. tx clock will be inversed in MII/RGMII case,

	2. tx clock inside MAC will be inversed relative to reference clock

	   which is from external PHYs in rmii case, and it rarely happen.

	   which is from external PHYs in RMII case, and it rarely happen.

- mediatek,rxc-inverse: boolean property, if present indicates that

	1. rx clock will be inversed in mii/rgmii case.

	2. reference clock will be inversed when arrived at MAC in rmii case.

	1. rx clock will be inversed in MII/RGMII case.

	2. reference clock will be inversed when arrived at MAC in RMII case.

- assigned-clocks: mac_main and ptp_ref clocks

- assigned-clock-parents: parent clocks of the assigned clocks

		mediatek,pericfg = <&pericfg>;

		mediatek,tx-delay-ps = <1530>;

		mediatek,rx-delay-ps = <1530>;

		mediatek,fine-tune;

		mediatek,rmii-rxc;

		mediatek,txc-inverse;

		mediatek,rxc-inverse;