tegra20: rename tegra2 -> tegra20

This is make naming consistent with the kernel and devicetree and in
preparation of pulling out the common tegra20 code.

Signed-off-by: Allen Martin <amartin@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/drivers/input/Makefile b/drivers/input/Makefile
index 5c831b2..68c6a16 100644
--- a/drivers/input/Makefile
+++ b/drivers/input/Makefile
@@ -26,7 +26,7 @@
 LIB	:= $(obj)libinput.o
 
 COBJS-$(CONFIG_I8042_KBD) += i8042.o
-COBJS-$(CONFIG_TEGRA2_KEYBOARD) += tegra-kbc.o
+COBJS-$(CONFIG_TEGRA20_KEYBOARD) += tegra-kbc.o
 ifdef CONFIG_PS2KBD
 COBJS-y += keyboard.o pc_keyb.o
 COBJS-$(CONFIG_PS2MULT) += ps2mult.o ps2ser.o