[AWARE] Add support for SDEA.ServiceInfo field

Add support for SDEA.ServiceInfo as extended service
specific information field in all SDF-related APIs:
discovery (configure & match), message sending and
receiving.

Rationale: SDEA.ServiceInfo will form the basis for
upper layer discovery protocols on NAN (e.g. mDNS).
Even if not exposed to user-facing API will need to
have handle to be able to create adaptation layers.

Bug: 35193423
Bug: 35040192
Test: unit test and integration (sl4a) tests.
Change-Id: I3fc225952e93a134d5e58795281238829ed4b1ea