Input: goodix - add device tree support

This change adds device tree support and binding information for Goodix
GT9xx series touchscreen controller.  It also adds support for 5-finger
chips, like GT911 and GT912, which can be found on ARM tablets, such as
Wexler TAB7200 and MSI Primo73.

Datasheets can be found here:
https://drive.google.com/folderview?id=0BxCVOQS3ZymGfmJyY2RKbE5XbVlKNlktVTlwV0lxNEdxd2dzeWZER094cmJPVnMxN1F0Yzg&usp=sharing

Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Reviewed-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 58917525126e..2adf7244b025 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -297,11 +297,12 @@ config TOUCHSCREEN_FUJITSU
 
 config TOUCHSCREEN_GOODIX
         tristate "Goodix I2C touchscreen"
-        depends on I2C && ACPI
+        depends on I2C
         help
           Say Y here if you have the Goodix touchscreen (such as one
           installed in Onda v975w tablets) connected to your
-          system.
+          system. It also supports 5-finger chip models, which can be
+          found on ARM tablets, like Wexler TAB7200 and MSI Primo73.
 
           If unsure, say N.