Bluetooth: btusb: Fix typo and correct the log print

Change "deivice" to "device"

Correct "Unsupported support hardware variant (%08x)" to
"Unsupported hardware variant (%08x)"

Signed-off-by: Jupeng Zhong <zhongjupeng@yulong.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>