Add platform/frameworks/support

* platform/frameworks/support is needed by
  android_frameworks_base.

* When building with a stripped down framework/base
  it was not needed. For the 'stripped' information
  refer to my comments here https://github.com/nkk71/android/commit/70da2068a8b63758c776b4eed663feaf5a55f6cd

remove-minimal.xml

@@ -231,7 +231,6 @@
     <remove-project name="platform/frameworks/opt/setupwizard" />
     <remove-project name="platform/frameworks/opt/timezonepicker" />
     <remove-project name="platform/frameworks/opt/vcard" />
-    <remove-project name="platform/frameworks/support" />
     <remove-project name="platform/frameworks/data-binding" />
     <remove-project name="platform/frameworks/webview" />
     <remove-project name="platform/frameworks/wilhelm" />