target/hexagon: Don't use tcg_temp_local_new_*

target/hexagon: Don't use tcg_temp_local_new_*

Since tcg_temp_new_* is now identical, use those.

Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>