Add native_bridge target to Android.bp

This allows us to build guest libraries for the native bridge for
arm/arm64 architectures.

Bug: http://b/77159578
Test: make
Change-Id: I35520ca456105ddadd456c78a4eb1e6de39147c5

java/dexpreopt.go

@@ -111,7 +111,9 @@ func (d *dexpreopter) dexpreopt(ctx android.ModuleContext, dexJarFile android.Mo
 	if len(archs) == 0 {
 		// assume this is a java library, dexpreopt for all arches for now
 		for _, target := range ctx.Config().Targets[android.Android] {
-			archs = append(archs, target.Arch.ArchType)
+			if target.NativeBridge == android.NativeBridgeDisabled {
+				archs = append(archs, target.Arch.ArchType)
+			}
 		}
 		if inList(ctx.ModuleName(), global.SystemServerJars) && !d.isSDKLibrary {
 			// If the module is not an SDK library and it's a system server jar, only preopt the primary arch.

java/dexpreopt_bootjars.go

@@ -197,8 +197,10 @@ func buildBootImage(ctx android.SingletonContext, config bootImageConfig) *bootI
 		}
 
 		for _, target := range targets {
-			files := buildBootImageRuleForArch(ctx, image, target.Arch.ArchType, profile, missingDeps)
-			allFiles = append(allFiles, files.Paths()...)
+			if target.NativeBridge == android.NativeBridgeDisabled {
+				files := buildBootImageRuleForArch(ctx, image, target.Arch.ArchType, profile, missingDeps)
+				allFiles = append(allFiles, files.Paths()...)
+			}
 		}
 	}