Adds support for emitting data with a reloc info to enable support
for HeapObjects for immediate deopt args, required by dynamic check maps.

In order to do this, a new DATA_EMBEDDED_OBJECT relocinfo type is added.
This represents a raw object inserted into the instruction stream. For
x64/ia32 it is treated the same as FULL_EMBEDDED_OBJECT, but on
Arm/Arm64 this behaves differently since it points directly to the
embedded object pointer rather than to an instruction that loads it.

BUG=v8:10582

Change-Id: I384e88af032b832742447482ae7af5c599097ec1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2595295Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71926}