Input: wm97xx - add Palm support to Mainstone accelerated touch

This patch refactors the Mainstone accelerated touch code a little and
adds support for interrupt driven touchscreen on Palm LifeDrive, TX and
Tungsten T5.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 1c05b32..07703bc 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -366,11 +366,11 @@
 	  be called atmel-wm97xx.
 
 config TOUCHSCREEN_WM97XX_MAINSTONE
-	tristate "WM97xx Mainstone accelerated touch"
+	tristate "WM97xx Mainstone/Palm accelerated touch"
 	depends on TOUCHSCREEN_WM97XX && ARCH_PXA
 	help
 	  Say Y here for support for streaming mode with WM97xx touchscreens
-	  on Mainstone systems.
+	  on Mainstone, Palm Tungsten T5, TX and LifeDrive systems.
 
 	  If unsure, say N.