defconfig: msm: Enable/Disable below function drivers on mdm9607 target

1. Enable USB AUDIO to support audio function drivers.
2. Disabled selinux security, propagated from 3.18.

Change-Id: Ia1b8143044cd6806a4fb15d02786d0baffcea1b7
Signed-off-by: bbheemag <bbheemag@codeaurora.org>
Signed-off-by: Sivasri Kumar Vanka <sivasri@codeaurora.org>