Use bootrr helpers to support waiting for some time for the partition to
appear before giving up. This removes the need for putting an explicit
sleep in the test script.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Move the common functions to a helper and use this from
assert_device_present.
Make assert_device_present accept a fourth parameter for a timeout,
which will cause the assert to wait for the given amount of time for the
device to appear.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
