arm64: tegra: Fix up compatible for Tegra234 GPCDMA

There is no need to list the Tegra194-specific compatible for Tegra234
because the backwards-compatibility goes back all the way to Tegra186.
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/boot/dts/nvidia/tegra234.dtsi

@@ -23,7 +23,6 @@ bus@0 {
 
 		gpcdma: dma-controller@2600000 {
 			compatible = "nvidia,tegra234-gpcdma",
-				     "nvidia,tegra194-gpcdma",
 				     "nvidia,tegra186-gpcdma";
 			reg = <0x2600000 0x210000>;
 			resets = <&bpmp TEGRA234_RESET_GPCDMA>;