Updated IO Regs to Drop Y and added Scom Access Method
Updated IO Regs to Drop Y and added Scom Access Method

Change-Id: I62e0d688470a237d77f001b10296cc0f7226de74
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/22081
Tested-by: Jenkins Server
Tested-by: Hostboot CI
Reviewed-by: Richard J. Knight <94c04f3910596886be97211d492ad29f0ba29cd5@us.ibm.com>
Reviewed-by: Gary A. Peterson <4fad44d1159626f080df244aebc90d985f64f4dc@us.ibm.com>
Reviewed-by: Christopher W. Steffen <32d1a9ec72cb0b49628aa45b733da26c4736f36b@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <ab93eca12e43608f33daa16a67357cd7b7e867ab@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/22085
Tested-by: FSP CI Jenkins
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>

Over-enthusiastic/hostboot,Over-enthusiastic/hostboot,Over-enthusiastic/hostboot,Over-enthusiastic/hostboot,Over-enthusiastic/hostboot