autotest: Update flashrom syntax for "-p" option

This does a simple find/replace of instances where the old flashrom
"-p" syntax is used to specify the target. The new syntax is more
intuitive and more reliable since it removes any ambiguity about
what device is actually being targeted, since some targets such as
the EC can be on different busses on different platforms.

Old syntax:
Host/BIOS ROM: -p internal:bus=spi
EC: -p internal:bus=lpc

New syntax:
Host/BIOS ROM -p host
EC: -p ec

BUG=chrome-os-partner:33452
BRANCH=none
TEST=needs testing

Signed-off-by: David Hendricks <dhendrix@chromium.org>
Change-Id: I5753a2f7402928dafbdaa31f5eec3f49612e1648
Reviewed-on: https://chromium-review.googlesource.com/226951
Reviewed-by: Yusuf Mohsinally <mohsinally@chromium.org>
Reviewed-by: Wai-Hong Tam <waihong@chromium.org>
4 files changed