aarch64.risu: add C3.6.23 Floating-point Conditional Compare
aarch64.risu: add C3.6.23 Floating-point Conditional Compare

this adds C3.6.23, including

FCCMP (single precision, double precision)
FCCMPE (single precision, double precision)

Signed-off-by: Claudio Fontana <5fe97b97070bc75ff3c7a6b130e2dcc62cbb9b58@linaro.org>

hw-claudio/risu-aarch64,hw-claudio/risu-aarch64