Rebase Wacom to v6.15

Benjamin Tissoiresrequested to merge
btissoir/centos-stream-9:wacom-9.7-102058 into main

This is an almost complete rebase to v6.15 for the wacom driver.

Almost because one commit is left on the side: 88006b8eca63 ("HID: wacom: Initialize brightness of LED trigger"). This one relies on a leds change not yet backported to RHEL 9.

JIRA: https://issues.redhat.com/browse/RHEL-102058

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

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