arm: Tegra2: GPIO: enable GPIO for Tegra2 boards

Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/include/configs/tegra2-common.h b/include/configs/tegra2-common.h
index 2d36d23..73e0f05 100644
--- a/include/configs/tegra2-common.h
+++ b/include/configs/tegra2-common.h
@@ -160,4 +160,6 @@
 						CONFIG_SYS_INIT_RAM_SIZE - \
 						GENERATED_GBL_DATA_SIZE)
 
+#define CONFIG_TEGRA2_GPIO
+#define CONFIG_CMD_GPIO
 #endif /* __TEGRA2_COMMON_H */