qcacmn: Add Global dispatcher support for Synthetic HW pulses

Provide Global function pointers for accessing DFS APIs that
1) allow or prevent the HW pulses. HW pulses are to be prevented
to detect the synthetic pulses.
2) query whether the HW pulses are allowed or not.

Change-Id: Id1e90ba6682afe747774b46da78f7ae6b56c94e6
CRs-Fixed: 2484584
2 files changed