musl does not support IBM 128 long double for ppc, instead of
doing complex overrides move it into a pythong snippet which
is easier to read and more compact.
(From OE-Core rev: e7011429e40ae96b9c9f1e7f3c6f4c1f1102607f)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>