Currently the main test for disassembly just checks that there is
disassembly support for a assembler function, it doesn't verify the
output is as expected.

Add a new test case that checks the disassembly output against an
expected string.

Right now we only check a single instruction, subsequent patches will
move more instructions into this test case.

Bug: v8:12207
Change-Id: Id183bb2fd625713d82239363ebce3f4c77155acd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3150145Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76828}