Sort the inputs to mergedAconfigFilesRule

The aconfig files are collected by visiting the direct deps of the
module. VisitDirectDeps does not guarantee ordered traversal. To prevent
non-determinism in the generated ninja file, sort the inputs.

Test: go build ./android
Change-Id: Ic67fc0859bf18de62b6297ed502d1d495cc3a780

android/aconfig_providers.go

@@ -171,7 +171,7 @@ func aconfigUpdateAndroidMkEntries(ctx fillInEntriesContext, mod Module, entries
 }
 
 func mergeAconfigFiles(ctx ModuleContext, container string, inputs Paths, generateRule bool) Paths {
-	inputs = LastUniquePaths(inputs)
+	inputs = SortedUniquePaths(inputs)
 	if len(inputs) == 1 {
 		return Paths{inputs[0]}
 	}