FmpDevicePkg: Add APIs to FmpDeviceLib

FmpDevicePkg: Add APIs to FmpDeviceLib

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1525
Add new APIs to FmpDevideLib to support multiple controllers
* RegisterFmpUninstaller()
* FmpDeviceSetContext()
* FmpDeviceGetHardwareInstance()

Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Eric Jin <eric.jin@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>