net: usb: qmi_wwan: Set DTR quirk for BroadMobi BM818

BM818 is based on Qualcomm MDM9607 chipset.

Fixes: 9a07406b ("net: usb: qmi_wwan: Add the BroadMobi BM818 card")
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Acked-by: Bjørn Mork <bjorn@mork.no>
Link: https://lore.kernel.org/r/20230526-bm818-dtr-v1-1-64bbfa6ba8af@puri.sm


Signed-off-by: Jakub Kicinski <kuba@kernel.org>