Changed from static to dynamic allocation for hw_mgr_intf.
Updated de-init handling during driver remove.
Updated Idle irq handling to not clear request data at idle irq.
Multiple request handling at buff done.
Offset fix.
CRs-Fixed: 2982472
Change-Id: I37fb690f9f4c1460ecf322a259e2e1001574339b
Signed-off-by: Vikram Sharma <vikramsa@codeaurora.org>