configs: bletchley: fix post_desc.json issue

In current config setting, it cause a endlees loop of post description
request between BMC and debug card.
Remove "phase 2" so that BMC will just reply 0x00 is last index.

Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Change-Id: I7b719c61c27d6aeadb1f0f9fbff55618b82e4ce8
1 file changed