Fix typos in various documentation and source files

The typos have been discovered with the "codespell" utility.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20190520081209.20415-1-thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
13 files changed