Shield PDA uses USB microcontroller to control PDA state.
This driver use USB control message to send shield related
information to PDA.

Bug 1556797

Change-Id: I7938ce6bc5b42dcd048f95e0cc2c1e5716e9b064
Signed-off-by: Rakesh Babu Bodla <rbodla@nvidia.com>
Reviewed-on: http://git-master/r/557892


Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>