crossgcc/buildgcc: Update for recent arch additions

- Add powerpc64le-linux-gnu & nds32le-elf to the instructions as
supported architectures
- Add nds32le-elf as a supported architecture so it will stop warning
when you build it.

Change-Id: Ifcdbc3d082eae5b9b5f8828914e7d2b7ed1f13a4
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/13961
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

0 files changed, 0 insertions, 0 deletions