Adding support for Quectel BG95 Modem offloaded driver
to zephyr.
The driver currently implements only the
client side functions of the "socket_op_vtable", and
so cannot be used for cases where Zephyr acts as a
server. Moreover the driver only supports TCP for now.
Looking through the guides, the same driver should be
usable for BG96 (and other modems) except for the modem
boot-up sequence. Hence its named as "bg9x" instead of
"bg95".
Tested extensively with Zephyr acting as MQTT endpoint
and publishing / subscribing data to / from an MQTT
broker.
Signed-off-by: Bilal Wasim <bilalwasim676@gmail.com>
Add support to build all current modem drivers (WNCM14A2A, GSM PPP, and
ublox-sara). We need a unique config for ublox-sara to be built since
the networking params conflict with other modem drivers.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
