USB: gadget: android: android USB gadget improvements:

USB: android gadget: add remote wakeup attribute to android function

Add remote wakeup attribute to configuration descriptor of android
function to advertise remote wakeup capability to host

Acked-by: Allam, Suresh Reddy <sallam@qualcomm.com>

Signed-off-by: Mike Lockwood <lockwood@android.com>

USB: gadget: android: Allow functions to handle setup requests.

Signed-off-by: Mike Lockwood <lockwood@android.com>

Support for specifying the list of USB functions from platform data.

The main android.c gadget driver no longer has hard coded references
to the mass_storage and adb functions.

Support for computing the product ID based on tables in platform data
and the currently enabled functions.

Moved the adb enable/disable logic from android.c to f_adb.c.

Change-Id: I6259d3fb1473ed973f700e55d17744956f3527bb
Signed-off-by: Mike Lockwood <lockwood@android.com>