tree 1b3e4ea2cb7907c9d5d7a2d390e9566ed54d2ea7
parent 179b2d989532afe14a88d57c3d1533b8cfe76cb9
author Doug Zongker <dougz@android.com> 1303489604 -0700
committer Doug Zongker <dougz@android.com> 1303489994 -0700

delay accessing misc partition until its device exists

When the misc partition is on an emmc device, recovery can get started
and try to access it before the kernel has actually created the
device.  Try statting the device before reading or writing it; delay
up to 10 seconds waiting for the device to exist.

Change-Id: Ib9bf6c35fa2c28fc43aa7550aaaffb76c9f6e120