tree ebc8da105c1f72e879b622a5140efa228e061414
parent a0b235a9d99de473d9f171b96bb1c49c3d0d004e
author Jiyong Park <jiyong@google.com> 1618886200 +0900
committer Jiyong Park <jiyong@google.com> 1618963881 +0900

android_system_image that generates linker.config.pb

android_system_image module type is a specialization of the
android_filesystem module type. Currently, it adds a build rule for
creating linker.config.pb from the information about all the other files
in the filesystem and includes linker.config.pb to the filesystem as
well.

To do so, the filesystem module now provides a function pointer which
subtype modules like android_system_image can implement to pass extra
files that they want to package in the filesystem.

In addition, the linkerconfig package is revised to make it possible to
build linker.config.pb file outside of the package.

Bug: 185391776
Test: m microdroid and inspect etc/linker.config.pb in it.

Change-Id: Id89c40b519213062860d7306029b8413d8d36a2d