FreeBSD_HEAD - Build #3045 - Fixed

[jenkins-admin at FreeBSD.org]

FreeBSD_HEAD - Build #3045 - Fixed:

Build information: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD/3045/
Full change log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD/3045/changes
Full build log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD/3045/console

Change summaries:

286417 by marcel:
o  Fix a typo.
o  Describe the file formats mkimg can create.

286416 by glebius:
Fix mtx_assert() argument.

286415 by mav:
Add unmapped I/O support to ata(4) driver.

Main problem there was PIO mode support, that required KVA mapping.
Handle that case using recently added pmap_quick_enter_page(9) KPI,
mapping data pages to KVA one at a time.