parameterize over data bus width

Change-Id: I7452a40fbfa61bca64b90b10403c306b059416e6
memread_manyclients128

Change-Id: I4232c72338939633674c5326e2d2dbda4f8358ad
memwrite_manyclients128

Change-Id: I807e8169950361780e5e47962724f4f549ca3b38
parameterize memwrite over DataBusWidth

Change-Id: I71a2cd0716f3cc885b2851e99b5ff0034a9867dc