snow: make build script erase 192KB instead of 128KB

This will make the build script wipe out more flash memory content.
Our image is a bit bigger now that we're testing with payloads, so
this is just added paranoia to prevent weird surprises caused by not
flashing the full image.

Change-Id: I31969922079e96886573d9d802266eb0052277cd
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2352
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

0 files changed, 0 insertions, 0 deletions