arm64: tegra: Use TEGRA186_ prefix for GPIOs

In order to move away from misleadingly generic definitions of the GPIO
macros, use the Tegra186-specific prefix. These are the last remaining
occurrences. The generic definitions can be removed after this.
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts

@@ -278,7 +278,7 @@ vdd_usb0: regulator@102 {
 			regulator-min-microvolt = <5000000>;
 			regulator-max-microvolt = <5000000>;
 
-			gpio = <&gpio TEGRA_MAIN_GPIO(L, 4) GPIO_ACTIVE_HIGH>;
+			gpio = <&gpio TEGRA186_MAIN_GPIO(L, 4) GPIO_ACTIVE_HIGH>;
 			enable-active-high;
 
 			vin-supply = <&vdd_5v0_sys>;
@@ -292,7 +292,7 @@ vdd_usb1: regulator@103 {
 			regulator-min-microvolt = <5000000>;
 			regulator-max-microvolt = <5000000>;
 
-			gpio = <&gpio TEGRA_MAIN_GPIO(L, 5) GPIO_ACTIVE_HIGH>;
+			gpio = <&gpio TEGRA186_MAIN_GPIO(L, 5) GPIO_ACTIVE_HIGH>;
 			enable-active-high;
 
 			vin-supply = <&vdd_5v0_sys>;