ARM: tegra: Rename EMC on Tegra124

Rename the EMC node to external-memory-controller according to device
tree best practices.

Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/arch/arm/boot/dts/tegra124-apalis-emc.dtsi b/arch/arm/boot/dts/tegra124-apalis-emc.dtsi
index d18eaf4..3240145 100644
--- a/arch/arm/boot/dts/tegra124-apalis-emc.dtsi
+++ b/arch/arm/boot/dts/tegra124-apalis-emc.dtsi
@@ -84,7 +84,7 @@ timing-924000000 {
 		};
 	};
 
-	emc@7001b000 {
+	external-memory-controller@7001b000 {
 		emc-timings-1 {
 			nvidia,ram-code = <1>;