Add -pie to device executable builds

Change-Id: I8faf5a245f61fc412ba617ac762831d9fcdb8e73
diff --git a/cc/cc.go b/cc/cc.go
index 3367a23..28ccc4c 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -1514,6 +1514,7 @@
 			}
 
 			flags.LdFlags = append(flags.LdFlags,
+				"-pie",
 				"-nostdlib",
 				"-Bdynamic",
 				fmt.Sprintf("-Wl,-dynamic-linker,%s", linker),