Bluetooth: Controller: Add sync established code comment

Add code comment related to sync context field used to
indicate the sync established event being generated towards
HCI Layer.

Co-authored-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
1 file changed