platform/x86: intel-vbtn: reduce unnecessary messages for normal users

Unsupported events is only useful for developers and does not meaningful
for users. Using dev_dbg makes more sense and reduces noise in kernel
messages.

Signed-off-by: Alex Hung <alex.hung@canonical.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
1 file changed