ppc patch queue 2018-07-09 Here's a final pull request before tomorrow's hard freeze. There are a number of fixes and improvements to the sm501 display driver (not strictly ppc related, but used only on ppc and SH). There's also a handful of unrelated fixes. Whether all the sm501 changes are bugfixes is somewhat debatable, but Peter has indicated he's ok with merging those for 3.0.