arch-arm64 is the base tune file for aarch64. Update this to allow the
system to work with both aarch32 and aarch64 (multilib).
arch-armv8 is for compatibility, it simply uses the base config for now.
feature-arm-thumb was updated, since aarch64 mode does NOT have thumb support.
We should only be processing warnings and additional arguments if thumb
support is enabled on the processor core.
Signed-off-by: Mark Hatle <mark.hatle@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
