PAL: free custompayload and payload to avoid memeory leak

The payload is not freed up in connectSessionDevice,
that will bring the risk of memeory leak.

Fix it by adding stream MFC configuration in configureMFC and
free payload pointer in configureMFC, and then free custom
payload in connectSessionDevice.

Change-Id: I61bf4f471ae49bb589706f2cae2f09e8f05df937
2 files changed