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/board/nvidia/whistler/whistler.c b/board/nvidia/whistler/whistler.c
index 1c2f33f..3ec24df 100644
--- a/board/nvidia/whistler/whistler.c
+++ b/board/nvidia/whistler/whistler.c
@@ -30,7 +30,7 @@
 #include <asm/arch/pinmux.h>
 #include <asm/arch/mmc.h>
 #include <asm/gpio.h>
-#ifdef CONFIG_TEGRA2_MMC
+#ifdef CONFIG_TEGRA_MMC
 #include <mmc.h>
 #endif