tcg: Remove TCG_TARGET_HAS_deposit_{i32,i64}

Make deposit "unconditional" in the sense that the opcode is
always present.  Rely instead on TCG_TARGET_deposit_valid,
now always defined.

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