Fix USB Touchscreen HID report descriptor

teensy3/usb_desc.c

         0x09, 0x51,             //     Usage (Contact Identifier)
         0x26, 0xFF, 0x00,       //     Logical Maximum (255)
         0x75, 0x08,             //     Report Size (8)
-        0x95, 0x02,             //     Report Count (1)
+        0x95, 0x01,             //     Report Count (1)
         0x81, 0x02,             //     Input (variable,absolute)
         0x05, 0x01,             //     Usage Page (Generic Desktop)
         0x09, 0x30,             //     Usage (X)
         0x26, 0xFF, 0x7F,       //     Logical Maximum (32767)
         0x65, 0x00,             //     Unit (None)  <-- probably needs real units?
         0x75, 0x10,             //     Report Size (16)
-        0x95, 0x01,             //     Report Count (2)
+        0x95, 0x02,             //     Report Count (2)
         0x81, 0x02,             //     Input (variable,absolute)
         0xC0,                   //   End Collection
         0x05, 0x0D,             //   Usage Page (Digitizer)
         0x09, 0x56,             //   Usage (Scan Time)
         0x81, 0x02,             //   Input (variable,absolute)
         0x09, 0x54,             //   Usage (Contact Count)
-        0x25, 0x0A,             //   Logical Maximum (10)
+        0x25, MULTITOUCH_FINGERS, // Logical Maximum (10)
         0x75, 0x08,             //   Report Size (8)
         0x95, 0x01,             //   Report Count (1)
         0x81, 0x02,             //   Input (variable,absolute)
         0x05, 0x0D,             //   Usage Page (Digitizers)
         0x09, 0x55,             //   Usage (Contact Count Maximum)
-        0x25, 0x0A,             //   Logical Maximum (10)
+        0x25, MULTITOUCH_FINGERS, // Logical Maximum (10)
         0x75, 0x08,             //   Report Size (8)
         0x95, 0x01,             //   Report Count (1)
         0xB1, 0x02,             //   Feature (variable,absolute)