The kernel-doc script identified some documentation issues in the
os_if folder, so fix most of them. However do not modify the file
qca_vendor.h since most of the issues there are present upstream, and
the downstream file should match the upstream file.
Change-Id: I71948fb497c1ea2d1dd46308277d99beefde18b8
CRs-Fixed: 3390428
Move hdd_request_manager to qcacmn osif layer, which will be used
by CP_STATs component.
Change-Id: Iebf7f9d259793b56cc70c5b3f9dec14a5ef35b25
CRs-Fixed: 2220035