In trampoline, we emit auipc+jalr first. But the offset between target and trampoline is less than int21, so we can use jal to replace auipc+jalr.
It can reduce number of execution instruction.

Change-Id: Idc37d80341030130c478209681cb54c63d1ddf27
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2939442
Auto-Submit: Yahan Lu <yahan@iscas.ac.cn>
Commit-Queue: Brice Dobry <brice.dobry@futurewei.com>
Reviewed-by: Brice Dobry <brice.dobry@futurewei.com>
Cr-Commit-Position: refs/heads/master@{#75072}