ARM: tegra: Fix misconfiguration of pin PH2 on Venice2

This pin needs to be configured in pull-down, non-tristate mode in order
for the backlight to work correctly.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

arch/arm/boot/dts/tegra124-venice2.dts

@@ -111,6 +111,13 @@ ph1 {
 				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
 				nvidia,tristate = <TEGRA_PIN_DISABLE>;
 			};
+			ph2 {
+				nvidia,pins = "ph2";
+				nvidia,function = "gmi";
+				nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+				nvidia,enable-input = <TEGRA_PIN_DISABLE>;
+			};
 			sdmmc1_clk_pz0 {
 				nvidia,pins = "sdmmc1_clk_pz0",
 					      "sdmmc1_cmd_pz1",