Replace the use of LL_FEAT define with ll_feat_get() so that
feature set value can be updated at runtime with host
feature bit values.
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
Put infrastructure for the following HCI commands/events in place:
* LE Read ISO Link Quality command
* LE Read ISO TX Sync command
* LE Set Host Feature Command
Signed-off-by: Asger Munk Nielsen <asmk@oticon.com>