Comment 17 for bug 1921991

For below error in test-stylus-validity and test-dbverify, I add this patch to support the 'Mobile' type.

Bail out! libwacom-FATAL-WARNING: Stylus '0x1' has no type defined, falling back to 'General'

commit 36a22c884f3439fd72bfc2268afd1c29364ffee8
Author: Jason Gerecke <email address hidden>
Date: Fri Nov 1 15:24:03 2019 -0700

    Introduce WSTYLUS_MOBILE type for AES devices
····
    AES styli are distinct enough from the existing stylus classes to
    deserve one of their own. This class is named WSTYLUS_MOBILE both to
    reflect the fact that AES sensors are only found on tablet PCs and to
    allow the potential inclusion of other similar sensors which may not
    use AES tech.
····
    Stylus test cases are added to cover the future addition of AES styli
    to libwacom.
····
    Signed-off-by: Jason Gerecke <email address hidden>