ofono: update 1.18 -> 1.19

ofono: update 1.18 -> 1.19

In particular, this fixes a crash on shutdown.

From upstream's ChangeLog:
ver 1.19:
        Fix issue with DHCP parsing and Huawei modems.
        Fix issue with detecting Huawei E3372 modem.
        Fix issue with handling serving cell info.
        Fix issue with handling SIM SC facility lock.
        Fix issue with Android RIL PIN retry logic.
        Fix issue with Android RIL and RAT handling.
        Add support for Android RIL cell broadcast.
        Add support for SoFIA 3GR thermal management.

Signed-off-by: André Draszik <adraszik@tycoint.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>