The intent here was to find the contents of the 3 low order bits
according to Table 11-5 in ETSI 102.221.  However, the mask ended up
only grabbing the contents of the 2 low order bits.

Session has to be open in order to have a valid session_id

Otherwise open_channel won't be called again after a failure.

Keep track of P-CSCF address

See merge request mer-core/ofono!281

And use IMS data profile for IMS data calls.

Miscellaneous mobile data issues

See merge request mer-core/ofono!280

grilio_channel_retry_request() returns FALSE if the request is pending,
i.e. has been submitted but there was no reply yet. In that case, in
order to retry right away, we need to cancel the already submitted
request (and ignore the reply when it arrives) and resubmit a fresh
new one.

Sumbit a pending request from the DBus queue

See merge request mer-core/ofono!279

Currently, the DBus queue stops working after an asynchronous request
has been completed while another request is pending. This commit adds
__ofono_dbus_queue_submit_next(), which fires a pending request after
the previous one completes.

Get rid of unwanted retries on manual network connection

See merge request mer-core/ofono!278

There is an issue when network operators return "allowed" flag no matter
which SIM card you are using currently. In that case, when user tries to
manually connect to such networks, it takes too long to have 2 (by
default) retries until device will get back to its home network.
So the solution is not to set additional retries to the
RIL_REQUEST_SET_NETWORK_SELECTION_MANUAL request, as it has been done
in RILJ.

Register HandsfreeAudioManager straight away at startup

See merge request mer-core/ofono!277

To ensure that all D-Bus objects which should be available straight
after startup are there when the first incoming D-Bus call arrives.

Those functions are called by ofono_handsfree_audio_ref/unref which
ensure that initialization is only done once.

Otherwise it's not clear how the client is supposed to wait for
org.ofono.HandsfreeAudioManager to appear and how to figure out
whether it's ever going to appear.

Don't try to connect HFP AG if bluetooth service is not available.

See merge request mer-core/ofono!276

Trying to connect too soon will result in profile interface registration
failure with timeout error, effectively blocking for dbus timeout (25s
by default).

[ril] Calculate signal strength based on rsrp value correctly. JB#50995.

See merge request mer-core/ofono!275

All the dBm values are converted to qdbm (multiply by 4) but rsrp which
results in incorrect signal strength representation on some devices.

[ril] Add config options for cell info update interval. JB#50608

See merge request mer-core/ofono!273

According to ril.h, a value of 0 means invoke RIL_UNSOL_CELL_INFO_LIST when
any of the reported information changes.

It's not obvious where it actualy comes from, let's have it in the build log.

[ofono] Don't support '.' as a DTMF pause character. Contributes to JB#50214

See merge request mer-core/ofono!271

[aarch64] Use macros for unitdir. Contributes to JB#49681

See merge request mer-core/ofono!272

Tweak CBS request retry logic

See merge request mer-core/ofono!270

I swear I've seen such cases!

There's no need for RIL_REQUEST_GSM_GET_BROADCAST_SMS_CONFIG, since we
are not using its result anyway. Better just register for notifications
which would simply never arrive if CBS doesn't work at all.

Important requests, however, better be retried on RIL_E_INVALID_STATE.

Allow the last CBS fragment to be truncated.

See merge request mer-core/ofono!269

That does happen in real life.

Refactring radio caps code

See merge request mer-core/ofono!261

The radio caps manager will not do anything until the roles are assigned
to modems, so data manager must select the modem with highest capabilities
for LTE instead of the first one.