The disassembler currently shows calls from JS code objects to wasm
code as:
REX.W movq r10,0x58466fd5120                   ;; js to wasm call

This does not show which code kind is being called (wasm function, lazy
compile stub, or wasm-to-wasm wrapper).

This CL extends the output to:
REX.W movq r10,0x58466fd5120 (wasm-to-wasm)    ;; js to wasm call

R=mtrofin@chromium.org, titzer@chromium.org

Bug: v8:6876, v8:7140
Change-Id: Ib350088017f767528ec0acd7d4c1c347758adcf2
Reviewed-on: https://chromium-review.googlesource.com/796270
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49727}