gd/hal: Rename the nocp_iso_clocker module to link_clocker

In preparation for adding the support for L2CAP credit
acknowledgments parsed from ACL data packets.

Add empty OnAclData packet handler, to be implemented.

Bug: 300285792
Bug: 312273987
Test: m com.android.btservices
Change-Id: Ib9b96c8c579ab67239d4a50f3fd1cf7e739a53bf