Bluetooth: monitor: Remove interrupt locking from monitor_console_out()
Bluetooth: monitor: Remove interrupt locking from monitor_console_out()

Locking interrupts for a long duration is in general bad design, and
is particularly bad for the controller which depends on low latency
interrupts. Instead of using interrupt locking introduce a new flag to
track the shared buffer usage and simply drop characters if the flag
is set.

Signed-off-by: Johan Hedberg <628991c7b0a19c384f9b99c21ec330ce952bb838@intel.com>

punitvara/zephyr,rsalveti/zephyr,holtmann/zephyr,nashif/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,galak/zephyr,mbolivar/zephyr,explora26/zephyr,nashif/zephyr,kraj/zephyr,fbsder/zephyr,Vudentz/zephyr,runchip/zephyr-cc3220,nashif/zephyr,holtmann/zephyr,GiulianoFranchetto/zephyr,fbsder/zephyr,nashif/zephyr,Vudentz/zephyr,aceofall/zephyr-iotos,explora26/zephyr,GiulianoFranchetto/zephyr,ldts/zephyr,zephyriot/zephyr,mbolivar/zephyr,finikorg/zephyr,runchip/zephyr-cc3220,kraj/zephyr,punitvara/zephyr,punitvara/zephyr,explora26/zephyr,zephyrproject-rtos/zephyr,rsalveti/zephyr,mbolivar/zephyr,aceofall/zephyr-iotos,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,fbsder/zephyr,holtmann/zephyr,punitvara/zephyr,rsalveti/zephyr,aceofall/zephyr-iotos,nashif/zephyr,fbsder/zephyr,ldts/zephyr,zephyriot/zephyr,kraj/zephyr,Vudentz/zephyr,Vudentz/zephyr,zephyriot/zephyr,kraj/zephyr,runchip/zephyr-cc3220,zephyriot/zephyr,aceofall/zephyr-iotos,mbolivar/zephyr,finikorg/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,zephyrproject-rtos/zephyr,mbolivar/zephyr,finikorg/zephyr,ldts/zephyr,galak/zephyr,rsalveti/zephyr,zephyriot/zephyr,runchip/zephyr-cc3220,finikorg/zephyr,Vudentz/zephyr,kraj/zephyr,holtmann/zephyr,explora26/zephyr,holtmann/zephyr,rsalveti/zephyr,aceofall/zephyr-iotos,punitvara/zephyr,galak/zephyr,explora26/zephyr,finikorg/zephyr,ldts/zephyr,ldts/zephyr,fbsder/zephyr,zephyrproject-rtos/zephyr,runchip/zephyr-cc3220