interfaces: update current path as package root path

Update current path as package root path, which
will help to avoid hard coded paths in project.
It is also recommended to use the current path.

Change-Id: Iba014f61a6e7a79148b511f6997d0197128459d6

debugutils/Android.bp

@@ -0,0 +1,4 @@
+hidl_package_root {
+    name: "vendor.qti.hardware.debugutils",
+    use_current: true,
+}