Slim_ngd: Don't create the device node per SSR

Observe the device crash due to the device node
gets created per ADSP SSR when the logical address
query succeeds at the first attempt.
This patch makes sure that the device node creation
happened only once  by declaring another variable to
track the logical address retry.

Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slim_ngd: notify slaves in some MDM restart scenarios

If MDM restarts when it had active framer, bus may lose sync.
Send device-down notification if that happens, and corresponding
reset-device and device-up notifications to slaves so that they
can act to restore their devices' communication over slimbus

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Naveen Kaje <nkaje@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
msm-slim-ngd: Read configurable external modem identifier

When an external modem is used, read the config from dt and use the
value in subsystem restart callback registration.

Signed-off-by: Naveen Kaje <nkaje@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slim_msm: Handle external-modem shutdown differently than restart

External modem may shutdown in cases other than subsystem-restart.
In that case, the power-up notification may not happen.
Handle such a scenario and make sure runtime-pm vote is not held
for more time than required, and that slave-device up/down/reset
notifications happen as expected if slimbus was down.

Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
slim_msm_ngd: Add IPC logging support

Add IPC logging support for improved debugging
per device, and in memory to avoid using kernel
dmesg logs.

Logs are captured in four levels.
1) error level ---> All fatal errors are logged
2) warn level  ---> error level logs +
Warning messages are logged
3) Info level  ---> Error level +
warn level + the required information
for debugging is logged
4) Debug level ----> error level + warn level +
info level logs + extra information
for debugging are logged

Procedure to change the debug level at runtime:
==============================================
cd sys/devices/ctrl_num(eg:1234).slim
echo <log_level> > debug_mask

Procedure to collect the logs at run time:
=========================================
adb shell cat sys/kernel/debug/ipc_logging/ctrl_num.slim/log_cont
|tee slimbus.txt

Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
defconfig: Update to Chaos 11.1

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>