viewsonic: Raise minimum pressure in report descriptor

The Viewsonic PD1011 signature pad seems to always report minimum
pressure value of 5, no matter if pen is touching the surface, or not.
This plays havoc with the xf86-input-libinput driver making it not
generate left button clicks. Raise the pressure minimum in the report
descriptor to make it register clicks properly.

Author: spbnick

hid-viewsonic.c

@@ -60,6 +60,7 @@ static __u8 pd1011_rdesc_fixed[] = {
 	0x75, 0x10,             /*          Report Size (16),           */
 	0x95, 0x01,             /*          Report Count (1),           */
 	0x09, 0x30,             /*          Usage (Tip Pressure),       */
+	0x15, 0x05,             /*          Logical Minimum (5),        */
 	0x26, 0xFF, 0x07,       /*          Logical Maximum (2047),     */
 	0x81, 0x02,             /*          Input (Variable),           */
 	0x75, 0x10,             /*          Report Size (16),           */