platform/x86: touchscreen_dmi: Update Trekstor Twin 10.1 entry

Add minimum values for the x and y axis, correct the max value for the
x-axis and add support for the capacitive home-button these tablets have.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/platform/x86/touchscreen_dmi.c

@@ -713,11 +713,14 @@ static const struct ts_dmi_data trekstor_primetab_t13b_data = {
 };
 
 static const struct property_entry trekstor_surftab_twin_10_1_props[] = {
-	PROPERTY_ENTRY_U32("touchscreen-size-x", 1900),
+	PROPERTY_ENTRY_U32("touchscreen-min-x", 20),
+	PROPERTY_ENTRY_U32("touchscreen-min-y", 0),
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 1890),
 	PROPERTY_ENTRY_U32("touchscreen-size-y", 1280),
 	PROPERTY_ENTRY_U32("touchscreen-inverted-y", 1),
 	PROPERTY_ENTRY_STRING("firmware-name", "gsl3670-surftab-twin-10-1-st10432-8.fw"),
 	PROPERTY_ENTRY_U32("silead,max-fingers", 10),
+	PROPERTY_ENTRY_BOOL("silead,home-button"),
 	{ }
 };