Bluetooth: controller: split: Fix pipeline prepare/resume loop
Bluetooth: controller: split: Fix pipeline prepare/resume loop

Fix the pipeline prepare or resume dequeue loop from
overflow. Fixes premature exit of dequeue of done FIFO
which caused the pipeline to overflow due to previously
placed done is not dequeued correctly and next event not
being put back into the pipeline.

Signed-off-by: Vinayak Kariappa Chettimada <e780c9f87dc729ad454f47292ad82c8652353064@nordicsemi.no>

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