target/arm: Implement VFP fp16 VRINT*

Implement the fp16 version of the VFP VRINT* insns.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200828183354.27913-19-peter.maydell@linaro.org
5 files changed