ARC 4.8.5 toolchain.

Custom build documented in
https://docs.google.com/document/d/1RvOcybiCGhS0xsuitRYDxQNgCxQVefpIPcfL4ByZwko/edit

Change-Id: I3685e59d95dfb7f421f0274ac39e300506f27526
9335 files changed