Add unstrippedOutputFilePath to the linker interface

Test: m
Change-Id: I85a0cbda6ebb9838451ed8c607c2087460b7b742
diff --git a/cc/binary.go b/cc/binary.go
index d4edc1a..a8eb641 100644
--- a/cc/binary.go
+++ b/cc/binary.go
@@ -405,6 +405,10 @@
 	return ret
 }
 
+func (binary *binaryDecorator) unstrippedOutputFilePath() android.Path {
+	return binary.unstrippedOutputFile
+}
+
 func (binary *binaryDecorator) symlinkList() []string {
 	return binary.symlinks
 }