ARM: tegra: tegra20-ac97: Replace deprecated "gpio" suffix

Replace "gpio" suffix with "gpios" for tegra20-ac97 DTS as the "gpio"
suffix is deprecated.

Signed-off-by: Mohammad Shehar Yaar Tausif <sheharyaar48@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Author: sheharyaar

arch/arm/boot/dts/nvidia/tegra20-colibri.dtsi

@@ -445,9 +445,9 @@
 
 	tegra_ac97: ac97@70002000 {
 		status = "okay";
-		nvidia,codec-reset-gpio =
+		nvidia,codec-reset-gpios =
 			<&gpio TEGRA_GPIO(V, 0) GPIO_ACTIVE_LOW>;
-		nvidia,codec-sync-gpio =
+		nvidia,codec-sync-gpios =
 			<&gpio TEGRA_GPIO(P, 0) GPIO_ACTIVE_HIGH>;
 	};