arm64: zynqmp: List reset property for ethernet phy

Add information about reset gpio for ethernet phy in case someone wants to
use it.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/e153f0cda37a2a6ea1c6e11fb0a4af1d400f29e2.1623684253.git.michal.simek@xilinx.com

arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts

@@ -204,6 +204,7 @@ phy0: ethernet-phy@21 {
 		ti,tx-internal-delay = <0xa>;
 		ti,fifo-depth = <0x1>;
 		ti,dp83867-rxctrl-strap-quirk;
+		/* reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>; */
 	};
 };
 

arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revB.dts

@@ -2,7 +2,7 @@
 /*
  * dts file for Xilinx ZynqMP ZCU102 RevB
  *
- * (C) Copyright 2016 - 2018, Xilinx, Inc.
+ * (C) Copyright 2016 - 2021, Xilinx, Inc.
  *
  * Michal Simek <michal.simek@xilinx.com>
  */
@@ -22,6 +22,7 @@ phyc: ethernet-phy@c {
 		ti,tx-internal-delay = <0xa>;
 		ti,fifo-depth = <0x1>;
 		ti,dp83867-rxctrl-strap-quirk;
+		/* reset-gpios = <&tca6416_u97 6 GPIO_ACTIVE_LOW>; */
 	};
 	/* Cleanup from RevA */
 	/delete-node/ ethernet-phy@21;