tools/bison: update to 3.5

tools/bison: update to 3.5

Update bison to 3.5

Release notes:
https://lists.gnu.org/archive/html/info-gnu/2019-12/msg00002.html

Note for future: release notes mention that YYPRINT macro is
declared deprecated, but apparently still works for now. I found
one possible use of that in scripts/config/zconf.tab.c_shipped
That might be modernized at some point, but as the file is synced
with the one from upstream Linux, it might get fixed there.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>