Remove the HL7800 DTR device tree binding because the
DTR IO is not needed for operation of the HL7800
modem.
Signed-off-by: Ryan Erickson <ryan.erickson@lairdconnect.com>
It should be "u-blox,sara-r4", because the vendor prefix for this
company is "u-blox", not "ublox".
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
Ryan Erickson