dt: amd-seattle: remove Overdrive revision A0 support

Support for AMD Seattle silicon revision A0 is no longer relevant,
since we no longer have a driver for the network controller, and
the PCIe on these boards was very unreliable. So drop the DTS
description of the A0 version of the overdrive board.
Signed-off-by: NArd Biesheuvel <ardb@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

arch/arm64/boot/dts/amd/Makefile

 # SPDX-License-Identifier: GPL-2.0
-dtb-$(CONFIG_ARCH_SEATTLE) += amd-overdrive.dtb \
-			amd-overdrive-rev-b0.dtb amd-overdrive-rev-b1.dtb
+dtb-$(CONFIG_ARCH_SEATTLE) += amd-overdrive-rev-b0.dtb amd-overdrive-rev-b1.dtb

arch/arm64/boot/dts/amd/amd-overdrive.dts

-// SPDX-License-Identifier: GPL-2.0
-/*
- * DTS file for AMD Seattle Overdrive Development Board
- *
- * Copyright (C) 2014 Advanced Micro Devices, Inc.
- */
-
-/dts-v1/;
-
-/include/ "amd-seattle-soc.dtsi"
-
-/ {
-	model = "AMD Seattle Development Board (Overdrive)";
-	compatible = "amd,seattle-overdrive", "amd,seattle";
-
-	chosen {
-		stdout-path = &serial0;
-	};
-};
-
-&ccp0 {
-	status = "ok";
-};
-
-&gpio0 {
-	status = "ok";
-};
-
-&gpio1 {
-	status = "ok";
-};
-
-&i2c0 {
-	status = "ok";
-};
-
-&pcie0 {
-	status = "ok";
-};
-
-&spi0 {
-	status = "ok";
-};
-
-&spi1 {
-	status = "ok";
-	sdcard0: sdcard@0 {
-		compatible = "mmc-spi-slot";
-		reg = <0>;
-		spi-max-frequency = <20000000>;
-		voltage-ranges = <3200 3400>;
-		gpios = <&gpio0 7 0>;
-		interrupt-parent = <&gpio0>;
-		interrupts = <7 3>;
-		pl022,hierarchy = <0>;
-		pl022,interface = <0>;
-		pl022,com-mode = <0x0>;
-		pl022,rx-level-trig = <0>;
-		pl022,tx-level-trig = <0>;
-	};
-};
-
-&v2m0 {
-	arm,msi-base-spi = <64>;
-	arm,msi-num-spis = <256>;
-};