ARM: dts: aspeed: Add a fastread property

All chips on OpenPOWER platforms support the fastread SPI command.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-ast2500-evb.dts

@@ -24,6 +24,7 @@ &fmc {
 	status = "okay";
 	flash@0 {
 		status = "okay";
+		m25p,fast-read;
 		label = "bmc";
 	};
 };
@@ -32,6 +33,7 @@ &spi1 {
 	status = "okay";
 	flash@0 {
 		status = "okay";
+		m25p,fast-read;
 		label = "pnor";
 	};
 };

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

@@ -35,6 +35,7 @@ &fmc {
 	status = "okay";
 	flash@0 {
 		status = "okay";
+		m25p,fast-read;
 		label = "bmc";
 	};
 };
@@ -43,6 +44,7 @@ &spi {
 	status = "okay";
 	flash@0 {
 		status = "okay";
+		m25p,fast-read;
 		label = "pnor";
 	};
 };

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

@@ -35,6 +35,7 @@ &fmc {
 	status = "okay";
 	flash@0 {
 		status = "okay";
+		m25p,fast-read;
 		label = "bmc";
 	};
 };
@@ -46,6 +47,7 @@ &spi1 {
 
 	flash@0 {
 		status = "okay";
+		m25p,fast-read;
 		label = "pnor";
 	};
 };