input: bump to ints for deviceids - XI2 requires 16-bit deviceids.

Note: ABI break, but ABI_XINPUT_VERSION has NOT been bumped. Recompile input
drivers.

Revert "Xi: return BadImplementation for deviceids 256 and above"
This reverts commit 2b459f44f3.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

Xi/xiquerypointer.c

@@ -81,12 +81,6 @@ ProcXIQueryPointer(ClientPtr client)
     REQUEST(xXIQueryPointerReq);
     REQUEST_SIZE_MATCH(xXIQueryPointerReq);
 
-    if (stuff->deviceid > 0xFF) /* FIXME */
-    {
-        client->errorValue = stuff->deviceid;
-        return BadImplementation;
-    }
-
     rc = dixLookupDevice(&pDev, stuff->deviceid, client, DixReadAccess);
     if (rc != Success)
         return rc;