arm64: tegra: Tegra132 EMC is not compatible with Tegra124

The external memory controller found on Tegra132 is not fully compatible
with the instantiation on Tegra124, so remove the corresponding string
from the list of compatible strings.
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/boot/dts/nvidia/tegra132.dtsi

@@ -605,7 +605,7 @@ mc: memory-controller@70019000 {
 	};
 
 	emc: external-memory-controller@7001b000 {
-		compatible = "nvidia,tegra132-emc", "nvidia,tegra124-emc";
+		compatible = "nvidia,tegra132-emc";
 		reg = <0x0 0x7001b000 0x0 0x1000>;
 		clocks = <&tegra_car TEGRA124_CLK_EMC>;
 		clock-names = "emc";