Bluetooth: Controller: Fix aux scanning with mixed ULL/LLL sched
Bluetooth: Controller: Fix aux scanning with mixed ULL/LLL sched

We should decide on flush immediately vs. from disabled_cb based on
ull_hdr reference count instead of last rxd node - if ull_hdr has
non-zero ref, then done event is still pending and we should flush
from there.

Signed-off-by: Andrzej Kaczmarek <e629a10adbe722145f074acb1ca27e72d94cfcb5@codecoup.pl>

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