Correctly label pointing device as absolute, not relative

The input device actually reports absolute events, not relative.
Interestingly it worked before, probably because of
InitAbsoluteClassDeviceStruct, but some applications were confused about
mismatching mode.

Fixes QubesOS/qubes-issues#7316

Author: marmarek

xf86-input-mfndev/src/qubes.c

@@ -364,7 +364,7 @@ static int _qubes_init_axes(DeviceIntPtr device)
         return BadAlloc;
 
 #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 12
-    pInfo->dev->valuator->mode = Relative;
+    pInfo->dev->valuator->mode = Absolute;
 #endif
 #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 13
     if (!InitAbsoluteClassDeviceStruct(device))
@@ -375,7 +375,7 @@ static int _qubes_init_axes(DeviceIntPtr device)
         xf86InitValuatorAxisStruct(device, i, *pQubes->labels, -1,
                 -1, 1, 1, 1
 #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 12
-                , Relative
+                , Absolute
 #endif
                 );
         xf86InitValuatorDefaults(device, i);