Get rid of DeviceName() from path related to dexpreopt

As-is, dexpreopt config and bootjar is in the dir including
DeviceName(). It causes unnecessary dexpreopt invocation when target is
changed repeatly. To avoid it, rename dir to common name.

Bug: 278833696
Test: m
Change-Id: I2818d9ae09e6c22ca6989cc8efdb70b470ec502c
diff --git a/java/dexpreopt_bootjars.go b/java/dexpreopt_bootjars.go
index f4827ea..f4c0935 100644
--- a/java/dexpreopt_bootjars.go
+++ b/java/dexpreopt_bootjars.go
@@ -507,8 +507,8 @@
 		// No module has enabled dexpreopting, so we assume there will be no boot image to make.
 		return
 	}
-
-	d.dexpreoptConfigForMake = android.PathForOutput(ctx, ctx.Config().DeviceName(), "dexpreopt.config")
+	archType := ctx.Config().Targets[android.Android][0].Arch.ArchType
+	d.dexpreoptConfigForMake = android.PathForOutput(ctx, toDexpreoptDirName(archType), "dexpreopt.config")
 	writeGlobalConfigForMake(ctx, d.dexpreoptConfigForMake)
 
 	global := dexpreopt.GetGlobalConfig(ctx)