spi: tegra2: rename tegra2_spi.* to tegra_spi.*

In anticipation of Tegra3 support, start removing/renaming
Tegra2-specific files. No functional changes (yet).
Also updated copyright to 2012.

Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index c967d87..c20f1f2 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -43,7 +43,7 @@
 COBJS-$(CONFIG_SOFT_SPI) += soft_spi.o
 COBJS-$(CONFIG_SH_SPI) += sh_spi.o
 COBJS-$(CONFIG_FSL_ESPI) += fsl_espi.o
-COBJS-$(CONFIG_TEGRA2_SPI) += tegra2_spi.o
+COBJS-$(CONFIG_TEGRA_SPI) += tegra_spi.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)