Bluetooth: controller: Add explicit opcode check in unknown rsp PDU

Add explicit opcode check when handling received unknown
response PDU.

Without this, for example, an in progress Data Length Update
procedure state was reset when receiving an unknown response
to slave initiated feature request.

Fixes #26252.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
1 file changed