Use UINT16 for GATT attribute id field

Id field is equal to attribute handle, so it must be 16bits.
Otherwise only piece of GATT database can be used.

Bug: 29253825
Change-Id: I75c0c993a987bf0a48e910fa3c0f41f9d876bec6
(cherry picked from commit 7dde9350e61acf97b98e9078972548f07e6a9400)
1 file changed