i386_mfld_defconfig: add CONFIG_LOCALVERSION_AUTO

i386_mfld_defconfig: add CONFIG_LOCALVERSION_AUTO

BZ: 18603

Add scm_version to the local version (information from git):
Automatically append version information to the version string

Change-Id: I0da48ce46a61c7ff330201409f4515e69332c573
Signed-off-by: Loic Martin <loicx.martin@intel.com>
Reviewed-on: http://android.intel.com:8080/30113
Reviewed-by: Hogander, Jouni <jouni.hogander@intel.com>
Reviewed-by: Mansoor, Illyas <illyas.mansoor@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>