arm64: tegra: Set reg property for display-hub on Tegra194

Technically the display-hub driver could access registers via the
specified region, though it practice it will do so via the display
controllers' register regions.

Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index b7665c4..6dfa1ca 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -493,6 +493,7 @@
 
 			display-hub@15200000 {
 				compatible = "nvidia,tegra194-display", "simple-bus";
+				reg = <0x15200000 0x00040000>;
 				resets = <&bpmp TEGRA194_RESET_NVDISPLAY0_MISC>,
 					 <&bpmp TEGRA194_RESET_NVDISPLAY0_WGRP0>,
 					 <&bpmp TEGRA194_RESET_NVDISPLAY0_WGRP1>,