target/arm: Avoid tcg_const_ptr in handle_vec_simd_sqshrn

It is easy enough to use mov instead of or-with-zero
and relying on the optimizer to fold away the or.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
1 file changed