This is just a simple change to reflect the actual state. No rewording
yet, just a simple substitution in most visible places - docs, README
and paths.

There are probably some leftovers here and there, but we can let them be
for now, this is already well overdue.

v2: fixed couple of obvious leftovers pointed out by Petri

Cc: Petri Latvala <petri.latvala@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Petri Latvala <petri.latvala@intel.com>