scripts: build-efi: Use the USB mouse

The USB mouse seems to have an absolute-pointer driver which can be
enabled in OVMF. Switch to this for x86.

Signed-off-by: Simon Glass <sjg@chromium.org>

scripts/build-efi

@@ -114,7 +114,7 @@ class BuildEfi:
                 extra += ['-display', 'default,show-cursor=on']
             else:  # x86
                 extra += ['-device', 'qemu-xhci', '-device', 'usb-kbd',
-                          '-device', 'usb-tablet']
+                          '-device', 'usb-mouse']
             extra += ['-serial', 'mon:stdio']
             serial_msg = ''
         if self.args.kvm: