target/arm: Implement VFP fp16 VCVT between float and integer

Implement the fp16 versions of the VFP VCVT instruction forms which
convert between floating point and integer.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200828183354.27913-13-peter.maydell@linaro.org
2 files changed