Specify string format arguments as logging function parameters

This allows logging to be lazzy when possible. This error can be found easily
with pylint.

Change-Id: Ib14530e34b33dce466cc52f365e3df26d394c161
Fix indentation

Change-Id: I7b48480d3419784f841423ddf617e2021c969ee8
Remove parenthesis around yield parameter

Change-Id: Ie93fab8cab98273ac2b107e5649efc5920501819
Fix PEP8.

Helps to run unit tests with ./ci-run normally.

Change-Id: I43a55beeacb149d74e44074e3fcba7de5a1a8cbb
gitreview: Set correct review hostname.

  * The correct review instance is review.linaro.org, not
    git.linaro.org.

Change-Id: I6ea541741cd26077d163d0528c384ddf4d18b066
beaglebone-black: add correct testboot_offset

Change-Id: Ifa073383b0881b4f091df6c844cfbd454aa2493c