ARM: dts: aspeed: everest: Add I2C switch on bus 8

The switch controls two busses containing some VRMs.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20211020215321.33960-4-eajames@linux.ibm.comSigned-off-by: Joel Stanley <joel@jms.id.au>

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

@@ -108,6 +108,8 @@ aliases {
 		i2c44 = &i2c15mux2chn1;
 		i2c45 = &i2c15mux2chn2;
 		i2c46 = &i2c15mux2chn3;
+		i2c47 = &i2c8mux0chn0;
+		i2c48 = &i2c8mux0chn1;
 
 		serial4 = &uart5;
 
@@ -1782,6 +1784,27 @@ eeprom@50 {
 		compatible = "atmel,24c128";
 		reg = <0x50>;
 	};
+
+	i2c-switch@70 {
+		compatible = "nxp,pca9546";
+		reg = <0x70>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "okay";
+		i2c-mux-idle-disconnect;
+
+		i2c8mux0chn0: i2c@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+		};
+
+		i2c8mux0chn1: i2c@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+		};
+	};
 };
 
 &i2c9 {