https://gcc.gnu.org/pipermail/gcc-announce/2022/000173.html
Add GCC 10.4.0 and regenerate the ct-ng patches. The
powerpc-Fix-asm-machine-directive-for-some-CPUs patch is dropped as the
change was applied upstream (and subsequently refactored).
Closes#1777
Signed-off-by: Chris Packham <judge.packham@gmail.com>
