Limit HotwordDetection process number to 10

Bug: 216095923
Test: existing CTS tests
Change-Id: I73d12ad84e2dce108dcc923c6ad400a2a1bdddd6
(cherry picked from commit bef5d91b67799c97b6b119e9e8e6d86da0be7451)
(cherry picked from commit 6db1879a192cec789a29507eb4eabd63dbb5fbd7)
Merged-in: I73d12ad84e2dce108dcc923c6ad400a2a1bdddd6
1 file changed