Add //packages/modules/common/build

system image which is declared in Android.bp should include the module.
so define phony module 'aosp_mainline_module' in
package_modules/common/build for aggregation.

Bug: 321000103
Test: m nothing
Change-Id: I4f16b9f96bf5f9e13c9f0ba5f43aaa963019e1c7