contributing.rst: added some more relevant information

Included IRC channels, and some relevant AOSP build related
information.

Change-Id: I5455bc30f63e0fdac65d6da6ac98c27147d401d0
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
diff --git a/docs/contributing.rst b/docs/contributing.rst
index ebbd483..5cf19c5 100644
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -11,8 +11,26 @@
 review and merge process is followed for dev-boards that have their source code
 hosted here.
 
-To submit contributions, please use
+To submit contributions for projects hosted here on devboardsforandroid, please use
 `devboardsforandroid Gerrit server <https://gerrit.devboardsforandroid.linaro.org/>`_.
 
 For communities around existing devices that already have a process for their
 contributions, reviewing and merging, we can continue to follow the same.
+
+Interactions
+============
+We have a couple of IRC channels on OFTC
+
+- **#linaro-android** to interact with the team at Linaro that works on Android
+- **#aosp-developers** as a community go-to place
+
+Google Groups
+=============
+
+A few Google groups around various topics of interest related to AOSP are
+also a good source of information and troubleshooting:
+
+- `Building AOSP <https://groups.google.com/g/android-building>`_
+- `AOSP Internals <https://groups.google.com/g/android-platform>`_
+- `Porting AOSP <https://groups.google.com/g/android-porting>`_
+- `Contributing to AOSP <https://groups.google.com/g/android-contrib>`_