tegra: i2c: Enable new CONFIG_SYS_I2C framework

This enables CONFIG_SYS_I2C on Tegra, updating existing boards and the Tegra
i2c driver to support this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/include/configs/tegra-common-post.h b/include/configs/tegra-common-post.h
index 6ed2fde..b784263 100644
--- a/include/configs/tegra-common-post.h
+++ b/include/configs/tegra-common-post.h
@@ -165,8 +165,8 @@
 #endif
 
 /* remove I2C support */
-#ifdef CONFIG_TEGRA_I2C
-#undef CONFIG_TEGRA_I2C
+#ifdef CONFIG_SYS_I2C_TEGRA
+#undef CONFIG_SYS_I2C_TEGRA
 #endif
 #ifdef CONFIG_CMD_I2C
 #undef CONFIG_CMD_I2C