ARM: defconfig: Remove unwanted configs for MONACO

Remove unwanted configs related to host mode and also configs that
are not applicable for MONACO.

Add required configs related to accessory and audiosource drivers to
be enabled for MONACO.

Change-Id: Icec46ae3ed80dc2d6842b308d0be38c5a8c14abd
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>