Finish auto-converting most of the gyp files.

I've also started writing down which ones need manual work.

Change-Id: I442782e1e3352e0de32b612f1bd2c167f231495a
diff --git a/aos/common/controls/controls.gyp b/aos/common/controls/controls.gyp
index 4e0bc79..8af66be 100644
--- a/aos/common/controls/controls.gyp
+++ b/aos/common/controls/controls.gyp
@@ -57,7 +57,7 @@
     {
       'target_name': 'control_loop_queues',
       'type': 'static_library',
-      'sources': [ '<(AOS)/common/controls/control_loops.q' ],
+      'sources': [ 'control_loops.q' ],
       'variables': {
         'header_path': 'aos/common/controls',
       },