Separate host and host cross fuzz packaging

Prevent collisions between host and host cross fuzz packaging when
both are supported as fuzz targets by using a different value for
hostOrTargetString.

Test: builds with HOST_CROSS_OS := linux_musl
Change-Id: I0e82bab2987899cece94c89eb8398d1733ebbd15

java/fuzz.go

@@ -150,7 +150,9 @@ func (s *javaFuzzPackager) GenerateBuildActions(ctx android.SingletonContext) {
 		}
 
 		hostOrTargetString := "target"
-		if javaFuzzModule.Host() {
+		if javaFuzzModule.Target().HostCross {
+			hostOrTargetString = "host_cross"
+		} else if javaFuzzModule.Host() {
 			hostOrTargetString = "host"
 		}