ARM: dts: aspeed: yamp: Set 32MB FMC flash layout

Set 32MB FMC flash layout in Yamp device tree explicitly because flash
layout settings were removed from "ast2500-facebook-netbmc-common.dtsi".
Signed-off-by: Tao Ren <rentao.bupt@gmail.com>
Link: https://lore.kernel.org/r/20200824211948.12852-4-rentao.bupt@gmail.comSigned-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-facebook-yamp.dts

@@ -108,3 +108,20 @@ &i2c12 {
 &i2c13 {
 	status = "okay";
 };
+
+&fmc_flash0 {
+#include "facebook-bmc-flash-layout.dtsi"
+};
+
+&fmc_flash1 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		flash1@0 {
+			reg = <0x0 0x2000000>;
+			label = "flash1";
+		};
+	};
+};