op-pdbg-host-control: Fix boot scripts for pdbg

The current scripts use ecmd-style bit ranges and call a "putcfam"
function/command that doesn't exist.

Use latest VCS fix and IPL start commands from Dean Sanner (including
scratch register 8 value), converted to pdbg masked read-modify-write
format.

Add optional argument to scripts for specifying pdbg's '-d' flag.

Scripts tested to boot a Zaius machine, but not tested with systemd
services for sequencing.

Partially resolves openbmc/openbmc#647.

Signed-off-by: Xo Wang <xow@google.com>
Change-Id: I87761d1454306ebf4ad597057d2160eae10dc8cb
2 files changed