ARM: dts: aspeed-plametto: Add flash layout and fix memory node

The OpenBMC flash layout is used by Palmetto systems.

Add the unit name to the memory node to fix a warning with W=1.
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-opp-palmetto.dts

@@ -12,7 +12,7 @@ chosen {
 		bootargs = "console=ttyS4,115200 earlyprintk";
 	};
 
-	memory {
+	memory@40000000 {
 		reg = <0x40000000 0x20000000>;
 	};
 
@@ -34,6 +34,7 @@ flash@0 {
 		status = "okay";
 		m25p,fast-read;
 		label = "bmc";
+#include "openbmc-flash-layout.dtsi"
 	};
 };