Use no_full_install: true instead of installable: false

So far, we have used `instalable: false` to avoid collision with the
other modules that are installed to the same path. A typical example was
<foo> and <foo>.microdroid. The latter is a modified version of the
former for the inclusion of the microdroid image. They however both have
the same instalation path (ex: system/bin) and stem (ex: foo) so that we
can reference them using the same path regardless of whether we are in
Android or microdroid.

However, the use of `installable: false` for the purpose is actually
incorrect, because `installable: false` also means, obviously, "this
module shouldn't be installed". The only reason this incorrect way has
worked is simply because packaging modules (ex: android_filesystem)
didn't respect the property when gathering the modules.

As packaging modules are now fixed to respect `installable: false`, we
need a correct way of avoiding the collision. `no_full_install: true` is
it.

If a module has this property set to true, it is never installed to the
full instal path like out/target/product/<partition>/... It can be
installed only via packaging modules.

Bug: 338160898
Test: m
Change-Id: Iee9be674951d0bf3d5e26432fcbae9afebb6007b
diff --git a/android/androidmk.go b/android/androidmk.go
index 07f7c58..53f0609 100644
--- a/android/androidmk.go
+++ b/android/androidmk.go
@@ -36,6 +36,7 @@
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/bootstrap"
 	"github.com/google/blueprint/pathtools"
+	"github.com/google/blueprint/proptools"
 )
 
 func init() {
@@ -541,6 +542,11 @@
 		a.SetPath("LOCAL_SOONG_INSTALLED_MODULE", base.katiInstalls[len(base.katiInstalls)-1].to)
 		a.SetString("LOCAL_SOONG_INSTALL_PAIRS", base.katiInstalls.BuiltInstalled())
 		a.SetPaths("LOCAL_SOONG_INSTALL_SYMLINKS", base.katiSymlinks.InstallPaths().Paths())
+	} else {
+		// Soong may not have generated the install rule also when `no_full_install: true`.
+		// Mark this module as uninstallable in order to prevent Make from creating an
+		// install rule there.
+		a.SetBoolIfTrue("LOCAL_UNINSTALLABLE_MODULE", proptools.Bool(base.commonProperties.No_full_install))
 	}
 
 	if len(base.testData) > 0 {