Import/Export LOCAL_PROPRIETARY_MODULE

Test: androidmk hardware/broadcom/libbt/Android.mk
Test: m -j vulkan.default, inspect out/soong/Android-aosp_flounder.mk
Change-Id: I8a9553f772a1d434eb0069c1575e1b0d6db36bc9

android/androidmk.go

@@ -224,6 +224,9 @@ func translateAndroidMkModule(ctx blueprint.SingletonContext, w io.Writer, mod b
 		if len(amod.commonProperties.Init_rc) > 0 {
 			fmt.Fprintln(w, "LOCAL_INIT_RC := ", strings.Join(amod.commonProperties.Init_rc, " "))
 		}
+		if amod.commonProperties.Proprietary {
+			fmt.Fprintln(w, "LOCAL_PROPRIETARY_MODULE := true")
+		}
 	}
 
 	if host {

androidmk/cmd/androidmk/android.go

@@ -78,6 +78,7 @@ var standardProperties = map[string]struct {
 	"LOCAL_PACK_MODULE_RELOCATIONS": {"pack_relocations", bpparser.BoolType},
 	"LOCAL_TIDY":                    {"tidy", bpparser.BoolType},
 	"LOCAL_USE_VNDK":                {"use_vndk", bpparser.BoolType},
+	"LOCAL_PROPRIETARY_MODULE":      {"proprietary", bpparser.BoolType},
 
 	"LOCAL_EXPORT_PACKAGE_RESOURCES": {"export_package_resources", bpparser.BoolType},
 }