freebsd

Consistently check for unsent data on the stream queues.

Sync in the latest CloudABI constants and data types.

Set EN_MAS7_UPDATE HID0 bit for e500 core.

ixl(4): Update to ixl-1.6.6-k.

powerpc busdma: Use pmap_quick_enter_page()/pmap_quick_remove_page() to handle