Set min_sdk_version

codecs_g711dec is missing min_sdk_version while it is available to
com.android.media.swcodec (which targets Q)

Likewise, libmedia_datasource_headers is set min_sdk_version as well
because it is used by com.android.media.

Bug: 152655956
Test: m
Change-Id: I93b90792f1650de898ff6a5687984b599329411f