ARM: dts: mxs: Add spi alias

After providing spi alias, we can get the following message during probe:

m25p80 spi1.0: sst25vf016b (2048 Kbytes)

,which looks better than the original one:

m25p80 spi32766.0: sst25vf016b (2048 Kbytes)

While at it, keep the alias entries in alphabetical order.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx23.dtsi

@@ -20,6 +20,8 @@ aliases {
 		gpio2 = &gpio2;
 		serial0 = &auart0;
 		serial1 = &auart1;
+		spi0 = &ssp0;
+		spi1 = &ssp1;
 	};
 
 	cpus {

arch/arm/boot/dts/imx28.dtsi

@@ -15,6 +15,8 @@ / {
 	interrupt-parent = <&icoll>;
 
 	aliases {
+		ethernet0 = &mac0;
+		ethernet1 = &mac1;
 		gpio0 = &gpio0;
 		gpio1 = &gpio1;
 		gpio2 = &gpio2;
@@ -27,8 +29,8 @@ aliases {
 		serial2 = &auart2;
 		serial3 = &auart3;
 		serial4 = &auart4;
-		ethernet0 = &mac0;
-		ethernet1 = &mac1;
+		spi0 = &ssp1;
+		spi1 = &ssp2;
 	};
 
 	cpus {