s/get_interesting_hal_pids/get_interesting_pids.

Since pids can belong to non hal processes as well, in theory.

Bug: 233130219

Test: build

Change-Id: I8ef6b2aaa871f6a8f992887a394d81c544e9cba4
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>