Adding chip_ec_feature attributes for dd2 build

Resulting dd10 hw_image file matches the one generated
from initfiles in master.

Grub boots with resulting image and procedures.

Change-Id: I7503e6031618d07684d8040f0b89b7e900f406ed
Original-Change-Id: I2257448a7dcdb6be44da6196da847cca8ad4077d
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/34736
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Thi N. Tran <thi@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Matt K. Light <mklight@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/55450
CI-Ready: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Tested-by: Daniel M. Crowell <dcrowell@us.ibm.com>