Update the experimental SH tunings to match the tunings README.
These tunings have not been tested, and are experimental!
(From OE-Core rev: 603a15bf4c838e4b6352e31f70a958d93f91138f)
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>