nanoMIPS is always NaN2008 compliant, and rules for checking
FCR31's NAN2008 bit are obsoleted.
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NAleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: NStefan Markovic <smarkovic@wavecomp.com>