There is a blue LED used to display connectivity for the SparkFun
SARA-R4 shield. This LED is connected to the modem via GPIO 16
which is the default used by SARA-R4 driver when
CONFIG_MODEM_UBLOX_SARA_R4_NET_STATUS is enabled.
Signed-off-by: Michael Scott <mike@foundries.io>
Move sparkfun_sara_r4 to conditional Kconfig.
As part of this change, remove disco_l475_iot1 specific configuration
as it is already part of board default configuration.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>