gpio: tegra2: rename tegra2_gpio.* to tegra_gpio.*

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/drivers/gpio/Makefile b/drivers/gpio/Makefile
index fb3b09a..5ae68d5 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -35,7 +35,7 @@
 COBJS-$(CONFIG_PCA9698)		+= pca9698.o
 COBJS-$(CONFIG_S5P)		+= s5p_gpio.o
 COBJS-$(CONFIG_SANDBOX_GPIO)	+= sandbox.o
-COBJS-$(CONFIG_TEGRA2_GPIO)	+= tegra2_gpio.o
+COBJS-$(CONFIG_TEGRA_GPIO)	+= tegra_gpio.o
 COBJS-$(CONFIG_DA8XX_GPIO)	+= da8xx_gpio.o
 COBJS-$(CONFIG_ALTERA_PIO)	+= altera_pio.o
 COBJS-$(CONFIG_MPC83XX_GPIO)	+= mpc83xx_gpio.o
diff --git a/drivers/gpio/tegra2_gpio.c b/drivers/gpio/tegra_gpio.c
similarity index 99%
rename from drivers/gpio/tegra2_gpio.c
rename to drivers/gpio/tegra_gpio.c
index 70ca46f..60ec6e3 100644
--- a/drivers/gpio/tegra2_gpio.c
+++ b/drivers/gpio/tegra_gpio.c
@@ -1,6 +1,6 @@
 /*
  * NVIDIA Tegra2 GPIO handling.
- *  (C) Copyright 2010,2011
+ *  (C) Copyright 2010-2012
  *  NVIDIA Corporation <www.nvidia.com>
  *
  * See file CREDITS for list of people who contributed to this