gcc-7.3: Fix build on ppc64le hosts
When building on ppc64le hosts that have GCC 8 (such as Ubuntu 18.10)
the GCC build bootstrap fails.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86162
This is a fix that was applied to the upstream GCC 7 branch.
Change-Id: I7796d2a999ec420805dd1c6cf0a1ecba1de5a897
(From OE-Core rev:
c17f5e7e954487ad3e97e26c3e0d31443d658d5a)
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
