uClibc-ng: update to 1.0.28
Lets update uClibc-ng to 1.0.28 version for compatibility with gcc 7.x.
Since 1.0.22 there were significant patches for compatibility with gcc 7.x:
https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=
5b0f49037e8ea8500b05c8f31ee88529ccac4cee
https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=
cee0b058fa0b4501b289a2da365182d60314d746
Signed-off-by: Evgeniy Didin <Evgeniy.Didin@synopsys.com>
CC: Alexey Brodkin <abrodkin@synopsys.com>
CC: John Crispin <john@phrozen.org>