Revert "Revert "Enforce min_sdk_version of apex(use_vendor:true)""

This reverts commit bacf34d986011a37dc45ebbd59d464950cd7574d.

Reason for revert: reland with fix

Change-Id: Ia03f2808353f5640597ae7ecbf2e06fc903c6977
diff --git a/cc/llndk_library.go b/cc/llndk_library.go
index 3dee692..09050aa 100644
--- a/cc/llndk_library.go
+++ b/cc/llndk_library.go
@@ -19,8 +19,14 @@
 	"strings"
 
 	"android/soong/android"
+
+	"github.com/google/blueprint"
 )
 
+var llndkImplDep = struct {
+	blueprint.DependencyTag
+}{}
+
 var (
 	llndkLibrarySuffix = ".llndk"
 	llndkHeadersSuffix = ".llndk"
@@ -81,6 +87,9 @@
 		// For non-enforcing devices, vndkVer is empty. Use "current" in that case, too.
 		vndkVer = "current"
 	}
+	if stub.stubsVersion() != "" {
+		vndkVer = stub.stubsVersion()
+	}
 	objs, versionScript := compileStubLibrary(ctx, flags, String(stub.Properties.Symbol_file), vndkVer, "--llndk")
 	stub.versionScriptPath = versionScript
 	return objs
@@ -154,6 +163,10 @@
 		stub.libraryDecorator.flagExporter.Properties.Export_include_dirs = []string{}
 	}
 
+	if stub.stubsVersion() != "" {
+		stub.reexportFlags("-D" + versioningMacroName(ctx.baseModuleName()) + "=" + stub.stubsVersion())
+	}
+
 	return stub.libraryDecorator.link(ctx, flags, deps, objs)
 }