uclibc: update uClibc-ng to 1.0.8

Fixes following problems:
- mips64 toolchain building when UCLIBC_HAS_CONTEXT_FUNCS is enabled
- segfault when SSP and NPTL is used for static binaries
- Updates for ARC and Xtensa
- missing syscalls for fanotify_init() and fanotify_mark() are added
- support for the syncfs() system call added
- problems compiling freeswitch are fixed
- problems running LTP regarding fallocate are fixed

Tested with defconfigs for Qemu arm/ppc/sh/mips/x86/x86_64/xtensa.

Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>