toolchain: unbreak glibc on MIPS
Binutils recently updated the ABI version to 5, which broke glibc, as it
refuses to load anything > 3. Upstream reverted the ABI version update,
so backport the commit.
Fixes the following error on boot:
/bin/sh: error while loading shared libraries: /lib/libcrypt.so.1: ELF file ABI version invalid
[ 0.920077] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f00
[ 0.920077]
[ 0.929450] Rebooting in 1 seconds..
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>