Add support for SiS i2c touch driver

Hi, This patch is to add support for SiS i2c touch panel. Thanks a lot.

v2: Fixed coding style and changed to threaded IRQ.

---
 drivers/input/touchscreen/Kconfig   |   2 +-
 drivers/input/touchscreen/sis_i2c.c | 646 +++++++++++++++---------------------
 drivers/input/touchscreen/sis_i2c.h | 164 ---------
 3 files changed, 273 insertions(+), 539 deletions(-)
 delete mode 100644 drivers/input/touchscreen/sis_i2c.h

index 3d7a30d..ca8420e 100644
@@ -1029,7 +1029,7 @@ config TOUCHSCREEN_ZFORCE
 
 config TOUCHSCREEN_SIS_I2C
 	tristate "SiS 9200 family I2C touchscreen driver"
-	depends on I2C
+	depends on I2C && CRC_ITU_T
 	help
 	  Say Y here to enable support for I2C connected SiS touch panels.
 

1.9.1