bluetooth: controller: Fixing race re. adv disable in HDC
bluetooth: controller: Fixing race re. adv disable in HDC

Re. issue "BT LL assert on LL/CON/ADV/BV-04-C #18584"

Signed-off-by: Erik Brockhoff <4dcf6e87472f737c02be7e0ee5609656d9dd6caa@oticon.com>

finikorg/zephyr,nashif/zephyr,Vudentz/zephyr,nashif/zephyr,finikorg/zephyr,galak/zephyr,Vudentz/zephyr,galak/zephyr,nashif/zephyr,finikorg/zephyr,galak/zephyr,Vudentz/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,Vudentz/zephyr,Vudentz/zephyr,finikorg/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr