mmc: tegra2: rename tegra2_mmc.* to tegra_mmc.*

In anticipation of Tegra3 support, continue removing/renaming
Tegra2-specific files. No functional changes (yet).
Updated copyrights to 2012.

Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/include/configs/harmony.h b/include/configs/harmony.h
index 88189be..d13ead9 100644
--- a/include/configs/harmony.h
+++ b/include/configs/harmony.h
@@ -55,7 +55,7 @@
 /* SD/MMC */
 #define CONFIG_MMC
 #define CONFIG_GENERIC_MMC
-#define CONFIG_TEGRA2_MMC
+#define CONFIG_TEGRA_MMC
 #define CONFIG_CMD_MMC
 
 #define CONFIG_DOS_PARTITION