Bluetooth: SAP: Header files changes to support SAP on Bluedroid

This change consists of:
Header file changes for Bluedroid SAP profile
Change-Id: I3c685967d6ed154f57fcd6f30b2402af9f42ec3f
(cherry picked from commit ff4940b8f32511fb870facc4eb2c36fb27890de0)
(cherry picked from commit d60cdf06d3220127e05a4f0db8fcda8c452b5637)
(cherry picked from commit 8bcadb8fef1f42a930b6bcf44c51cb8da58e9383)