Driver is missing couple of deregister handler while bringing down the
scheduler.
Change-Id: I99fe6e9a5d3cac800154945e41e707ebb7ee6396
CRs-Fixed: 2001133
Legacy protocol engine already has a module name 'sch' rename
control path scheduler from sch to scheduler to avoid naming
conflict with protocol sch.
Change-Id: I94ce9aa5037aa75319aaad2287116462444c03f4
CRs-Fixed: 1105115