Partial reverts of vndk-apex

This installs vndk libs under system/lib/vndk
instead of vndk-apex.
(Partial reverts of 31c470b5d5)

Also fixes the bug 097087be53 brought.
This produced incomplete list of vndkcorevariant.libraries.txt.

Bug: 143374795
Test: m && boot
Change-Id: I17864de4770a84431756e0c3765b601d3dc2abb1

cc/androidmk.go

@@ -93,11 +93,6 @@ func (c *Module) AndroidMk() android.AndroidMkData {
 					fmt.Fprintln(w, "LOCAL_USE_VNDK := true")
 					if c.isVndk() && !c.static() {
 						fmt.Fprintln(w, "LOCAL_SOONG_VNDK_VERSION := "+c.vndkVersion())
-						// VNDK libraries available to vendor are not installed because
-						// they are packaged in VNDK APEX and installed by APEX packages (apex/apex.go)
-						if !c.isVndkExt() {
-							fmt.Fprintln(w, "LOCAL_UNINSTALLABLE_MODULE := true")
-						}
 					}
 				}
 			},

cc/vndk.go

@@ -301,7 +301,7 @@ func processVndkLibrary(mctx android.BottomUpMutatorContext, m *Module) {
 	if inList(name, vndkMustUseVendorVariantList(mctx.Config())) {
 		m.Properties.MustUseVendorVariant = true
 	}
-	if mctx.DeviceConfig().VndkUseCoreVariant() && !m.mustUseVendorVariant() {
+	if mctx.DeviceConfig().VndkUseCoreVariant() && !inList(name, vndkMustUseVendorVariantList(mctx.Config())) {
 		vndkUsingCoreVariantLibraries := vndkUsingCoreVariantLibraries(mctx.Config())
 		if !inList(name, *vndkUsingCoreVariantLibraries) {
 			*vndkUsingCoreVariantLibraries = append(*vndkUsingCoreVariantLibraries, name)