Input: add driver for Altera PS/2 controller

This patch adds a new SERIO driver to support the Altera University
Program PS/2 controller.

[dtor@mail.ru: assorted cleanups]
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/serio/Makefile b/drivers/input/serio/Makefile
index 9b6c813..bf945f7 100644
--- a/drivers/input/serio/Makefile
+++ b/drivers/input/serio/Makefile
@@ -22,3 +22,4 @@
 obj-$(CONFIG_SERIO_LIBPS2)	+= libps2.o
 obj-$(CONFIG_SERIO_RAW)		+= serio_raw.o
 obj-$(CONFIG_SERIO_XILINX_XPS_PS2)	+= xilinx_ps2.o
+obj-$(CONFIG_SERIO_ALTERA_PS2)	+= altera_ps2.o