dt: arm64: Add CLK_ETH to RP1 ethernet MAC

clk_eth is set up by the firmware and is required for the MAC to
work, but the kernel knew nothing about it.

Add the relevant link so the kernel matches reality.

Signed-off-by: Dave Stevenson <[email protected]>

Author: 6by9

arch/arm64/boot/dts/broadcom/rp1.dtsi

@@ -972,8 +972,10 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 			interrupts = <RP1_INT_ETH IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&macb_pclk &macb_hclk &rp1_clocks RP1_CLK_ETH_TSU>;
-			clock-names = "pclk", "hclk", "tsu_clk";
+			clocks = <&macb_pclk &macb_hclk
+				  &rp1_clocks RP1_CLK_ETH_TSU
+				  &rp1_clocks RP1_CLK_ETH>;
+			clock-names = "pclk", "hclk", "tsu_clk", "tx_clk";
 			phy-mode = "rgmii-id";
 			cdns,aw2w-max-pipe = /bits/ 8 <8>;
 			cdns,ar2r-max-pipe = /bits/ 8 <8>;