NdkMediaDrm: send provision event with 0 data

(cherry picked from aosp/2157776)

Bug: 237602277
Test: Amlogic customer manual testing
Change-Id: I5cb666eb3648c76e3df178fa34493261e18779ab
Merged-In: I5cb666eb3648c76e3df178fa34493261e18779ab
1 file changed