USB: Simplify USB ID table match

usb_device_match_id() supports being passed NULL tables, so no need to
check for it.

Signed-off-by: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/20200727104644.149873-1-hadess@hadess.net


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>