Tag dex_preopt.profile as a path

Tag dex_preopt.profile with `android:"path"` so that it can be used
with a filegroup.

Test: m checkbuild
Change-Id: I5d6bbfcfcf0a1a22c9478ad57d0c55fb9b9efadd
diff --git a/java/dexpreopt.go b/java/dexpreopt.go
index 9141f9e..b502d07 100644
--- a/java/dexpreopt.go
+++ b/java/dexpreopt.go
@@ -51,7 +51,7 @@
 		// If set, provides the path to profile relative to the Android.bp file.  If not set,
 		// defaults to searching for a file that matches the name of this module in the default
 		// profile location set by PRODUCT_DEX_PREOPT_PROFILE_DIR, or empty if not found.
-		Profile *string
+		Profile *string `android:"path"`
 	}
 }