defconfig: Sync up with defaults

The defconfigs have drifted away from the Kbuild defaults due to
hand-editing. Sync them back up. Process was as follows:

    $ ./scripts/build-all.py --updateconfig -j12 all

Change-Id: Ied89fe1e153bc4cfc9d1b55b7971c9752b200735
Signed-off-by: Ian Maund <imaund@codeaurora.org>