ARM: dts: aspeed: mtjade,mtmitchell: Add BMC SSIF nodes

Add BMC SSIF node to support IPMI in-band communication.

Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>
Link: https://lore.kernel.org/r/20221024081115.3320584-1-quan@os.amperecomputing.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/arch/arm/boot/dts/aspeed-bmc-ampere-mtjade.dts b/arch/arm/boot/dts/aspeed-bmc-ampere-mtjade.dts
index d127cbc..3533598 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ampere-mtjade.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ampere-mtjade.dts
@@ -342,6 +342,10 @@ &mac1 {
 
 &i2c0 {
 	status = "okay";
+	ssif-bmc@10 {
+		compatible = "ssif-bmc";
+		reg = <0x10>;
+	};
 };
 
 &i2c1 {
diff --git a/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts b/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
index 606cd4b..4b91600 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
@@ -445,6 +445,10 @@ &i2c9 {
 
 &i2c11 {
 	status = "okay";
+	ssif-bmc@10 {
+		compatible = "ssif-bmc";
+		reg = <0x10>;
+	};
 };
 
 &i2c14 {