platform/x86: wireless-hotkey: remove hardcoded "hp" from the error message

This driver is no longer specific to HP laptops so "hp" in the error
message is no longer applicable.

Signed-off-by: Alex Hung <alex.hung@canonical.com>
Link: https://lore.kernel.org/r/20210710190810.313104-1-alex.hung@canonical.com


Signed-off-by: Hans de Goede <hdegoede@redhat.com>