Set minimal AVC encoder level to AVCLevel1

There is a CTS test asking for a AVCLevel1 encoder. Lower the minimal
level to AVCLevel1 in low resolution so that it can pass the test.

BUG: 37101765

Test: run cts -m CtsMediaTestCases -t
android.media.cts.MediaRecorderTest#testProfileAvcBaselineLevel1

Change-Id: Id04d3389be8d6761c6d2040a7bea54a2753a7ee7
(cherry picked from commit 085bdc87edeb5304d9dc604a4d3aa4de67cb6009)