tree 83d313c1cb3e9a3a6795faeceb832cfd1f423870
parent 883b4c8be5f50cde679cdfa589d7ade83c0253b7
author Doug Zongker <dougz@android.com> 1264034050 -0800
committer Doug Zongker <dougz@android.com> 1264107004 -0800

save the recovery log from before HTC firmware updates

When doing a firmware (radio or hboot) update on HTC devices, save the
recovery log in block 1 of the cache partition, before the firmware
image and the UI bitmaps.  When we boot back into recovery after the
firmware update to reformat the cache partition, copy that log out of
cache before reformatting it and dump it into the current invocation's
log.

The practical upshot of all this is that we can see the log output
from radio and hboot updates.

Change-Id: Ie0e89566754c88f4bed6a90d8a0aa04047b01a27