Bluetooth: Controller: df: Add disable support for CTE REQ and RSP proc

Add missing implementation for disabling CTE request and resposne
control procedures.
If any of these commands is active in LLL then ULL context has
to wait before return. The wait mechanism is based on semaphore.
The semaphore is initialized in ULL context and given by code
responsible for command completion.

Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>