libsysutils: reimplement NetlinkEvent::findParam in the proper way

The original implementation can not find correct parameters for certain
cases. For example, if you have both foo_bar and foo, try to find foo
may be mismatched. The correct way is to match with "=".

Change-Id: I403b1a7b889583a57a4f3a14e575181ce93b10ff
1 file changed