USB: option.c to support Qisda H21/H20 usb modem

This patch added Qisda(VID) & H21/H20(PID) into to supporting list.
Please help to check this patch,

From: Brad Lu <Brad.Lu@Qisda.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>