prebuilt_apis should create a java_system_modules_import

Previously it was creating a java_system_modules which worked fine
because apart from the prebuilt nature the two are functionally
identical. However a follow up change will differentiate between them
which would break this code.

Bug: 182402568
Test: m nothing
Change-Id: Ifc13ce31235494e338d730c61a99d8887c5a2c5b
diff --git a/java/prebuilt_apis.go b/java/prebuilt_apis.go
index c91b321..59b8b8c 100644
--- a/java/prebuilt_apis.go
+++ b/java/prebuilt_apis.go
@@ -178,7 +178,7 @@
 	props.Name = proptools.StringPtr(prebuiltApiModuleName(mctx, "system_modules", "public", apiver))
 	props.Libs = append(props.Libs, prebuiltApiModuleName(mctx, "core-for-system-modules", "public", apiver))
 
-	mctx.CreateModule(SystemModulesFactory, &props)
+	mctx.CreateModule(systemModulesImportFactory, &props)
 }
 
 func prebuiltSdkSystemModules(mctx android.LoadHookContext, p *prebuiltApis) {