crosstool-ng/picolibc: Add crosstool version with picolibc x86_64 fix

This fix allows building the x86_64-zephyr-elf toolchain on non-x86
targets.

Signed-off-by: Keith Packard <[email protected]>
Signed-off-by: Stephanos Ioannidis <[email protected]>

Author: keith-packard