gadgetd: Add descriptors parsing from ffs config files
gadgetd: Add descriptors parsing from ffs config files

Change-Id: I558c34f1cb67e632d2d3a015a4780cbd45ddcf1f
Signed-off-by: Pawel Szewczyk <1691dcf8dab804b326e5e4b9ab228a1c3b23a2f2@samsung.com>

gadgetd/gadgetd,gadgetd/gadgetd,gadgetd/gadgetd