Update makefiles for c++-sources and c++-headers.

Test: pass
Bug: 38174080
Change-Id: Id4bfe19b18c3b0c08ec83288aeb7a542230b3ba5
diff --git a/transport/memory/1.0/Android.bp b/transport/memory/1.0/Android.bp
index 589f865..01a80ed 100644
--- a/transport/memory/1.0/Android.bp
+++ b/transport/memory/1.0/Android.bp
@@ -11,7 +11,7 @@
 genrule {
     name: "android.hidl.memory@1.0_genc++",
     tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hidl:system/libhidl/transport android.hidl.memory@1.0",
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-sources -randroid.hidl:system/libhidl/transport android.hidl.memory@1.0",
     srcs: [
         ":android.hidl.memory@1.0_hal",
     ],
@@ -24,7 +24,7 @@
 genrule {
     name: "android.hidl.memory@1.0_genc++_headers",
     tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hidl:system/libhidl/transport android.hidl.memory@1.0",
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-headers -randroid.hidl:system/libhidl/transport android.hidl.memory@1.0",
     srcs: [
         ":android.hidl.memory@1.0_hal",
     ],