Provide an Android.mk that is used by hybris modified build/core/main.mk. This is intended to be similar to including AndroidBoard.mk for device/lge/mako/ but avoids modifying that repo.

Signed-off-by: David Greaves <david@dgreaves.com>
Modify the config to support modules but force all configs which would default to =m to be =y. This is because AndroidKernel.mk assumes/requires CONFIG_MODULE and it's nice to allow modules for developers.

Signed-off-by: David Greaves <david@dgreaves.com>