Update the CounterDirectory Packet offsets to be relative to the start of the table...

Update the CounterDirectory Packet offsets to be relative to the start of the table containing that offset

 * IVGCVSW-4763 Update the event pointer table offsets
 * IVGCVSW-4764 Update the event record block offsets
 * IVGCVSW-4765 Update the device name offset
 * IVGCVSW-4766 Update the counter set name offset
 * IVGCVSW-4767 Update device pointer table offsets
 * IVGCVSW-4768 Update the counter set pointer table offsets
 * IVGCVSW-4769 Update the category pointer table offsets

Signed-off-by: Finn Williams <Finn.Williams@arm.com>
Change-Id: I6e815ae5b16478fc5ec760caf704451fe5f84a29