ARM: tegra: colibri_t20: simplify model and compatible properties

Simplify model and compatible by dropping the 256/512 MB from the model
and -512 from the compatible properties to be more in-line with all our
other device trees.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Documentation/devicetree/bindings/arm/tegra.txt

@@ -53,7 +53,7 @@ board-specific compatible values:
   toradex,apalis-tk1-eval
   toradex,apalis-tk1-v1.2
   toradex,apalis-tk1-v1.2-eval
-  toradex,colibri_t20-512
+  toradex,colibri_t20
   toradex,colibri_t30
   toradex,colibri_t30-eval-v3
   toradex,iris

arch/arm/boot/dts/tegra20-colibri-iris.dts

@@ -5,8 +5,8 @@
 #include "tegra20-colibri.dtsi"
 
 / {
-	model = "Toradex Colibri T20 256/512 MB on Iris";
-	compatible = "toradex,iris", "toradex,colibri_t20-512", "nvidia,tegra20";
+	model = "Toradex Colibri T20 on Iris";
+	compatible = "toradex,iris", "toradex,colibri_t20", "nvidia,tegra20";
 
 	aliases {
 		rtc0 = "/i2c@7000c000/rtc@68";

arch/arm/boot/dts/tegra20-colibri.dtsi

@@ -8,8 +8,8 @@
  * Colibri T20 512MB IT V1.2A
  */
 / {
-	model = "Toradex Colibri T20 256/512 MB";
-	compatible = "toradex,colibri_t20-512", "nvidia,tegra20";
+	model = "Toradex Colibri T20";
+	compatible = "toradex,colibri_t20", "nvidia,tegra20";
 
 	memory@0 {
 		/*