ARM: dts: aspeed: Add Rainier 1S4U machine

The 1S4U version of the Rainier system has only 4 fans. Create a new
tree, include the 4U version, and delete the 2 extra fans.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20210329150020.13632-23-eajames@linux.ibm.comSigned-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/Makefile

@@ -1419,6 +1419,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-bmc-facebook-yosemitev2.dtb \
 	aspeed-bmc-ibm-everest.dtb \
 	aspeed-bmc-ibm-rainier.dtb \
+	aspeed-bmc-ibm-rainier-1s4u.dtb \
 	aspeed-bmc-ibm-rainier-4u.dtb \
 	aspeed-bmc-intel-s2600wf.dtb \
 	aspeed-bmc-inspur-fp5280g2.dtb \

arch/arm/boot/dts/aspeed-bmc-ibm-rainier-1s4u.dts

+// SPDX-License-Identifier: GPL-2.0-or-later
+// Copyright 2021 IBM Corp.
+/dts-v1/;
+
+#include "aspeed-bmc-ibm-rainier-4u.dts"
+
+/ {
+	model = "Rainier 1S4U";
+};
+
+&max {
+	/delete-node/ fan4;
+	/delete-node/ fan5;
+};

arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts

@@ -1211,7 +1211,7 @@ tmp275@48 {
 		reg = <0x48>;
 	};
 
-	max31785@52 {
+	max: max31785@52 {
 		compatible = "maxim,max31785a";
 		reg = <0x52>;
 		#address-cells = <1>;