[WIFICOND][API] Replace capability BitSet by an int

The capability bit set is standard constrained - 16 bits and no more.
Can use a simpler/lighter int.

Per API council feedback.

Bug: 148680192
Test: atest android.net.wifi
Test: atest com.android.server.wifi
Change-Id: Ic6baea4cbbb7a01b37a53620e62676d4b5c37a35
3 files changed
tree: 01c12bbdf796ea9672b7c82c6ed35701661b990d
  1. apex/
  2. service/
  3. PREUPLOAD.cfg