buildroot: Bump to pick up GCC 8 ppc64le fix

When building on a ppc64le host we see this error:

    build/genmatch --gimple ../../gcc/match.pd \
        > tmp-gimple-match.c
    ../../gcc/match.pd:120:1 error: expected (, got NAME
       negative value by 0 gives -0, not +0.  */

This was reported upstream[1] and fixed on the GCC 6 [2] and GCC 7 [3]
branches:

    Backport from mainline
    2018-01-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>

    * lex.c (search_line_fast): Remove illegal coercion of an
    unaligned pointer value to vector pointer type and replace with
    use of __builtin_vec_vsx_ld () built-in function, which operates
    on unaligned pointer values.

The patches included in Buildroot contain just the code changes, and not
the changelog, to make it easer to manage backporting.

Tested on Ubuntu Cosmic ppc64le.

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86162
[2] https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=261621
[3] https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=262243

Signed-off-by: Joel Stanley <joel@jms.id.au>

1 files changed, 0 insertions, 0 deletions

diff --git a/buildroot b/buildroot
-Subproject 9f5057fa33f6b72c4bb919d7116715f7abbb5ec
+Subproject c99f2eeb8cc85e36a34a957b57cfbba9647d262