Add delphick and solanes to codegen/ OWNERS

Change-Id: If3b514cd813bef3feb036b8ae965211335cae5fd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2064213
Commit-Queue: Dan Elphick <delphick@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66337}

src/codegen/OWNERS

 bbudge@chromium.org
 bmeurer@chromium.org
 clemensb@chromium.org
+delphick@chromium.org
 gdeepti@chromium.org
 ishell@chromium.org
 jarin@chromium.org
@@ -12,6 +13,7 @@ mvstanton@chromium.org
 neis@chromium.org
 rmcilroy@chromium.org
 sigurds@chromium.org
+solanes@chromium.org
 tebbi@chromium.org
 titzer@chromium.org
 mythria@chromium.org