[build] Add configs for ios builders

NOTRY=true

Bug: v8:9217
Change-Id: I9e7a834ec7a19b1d1a4469b6024e08e21b5c1921
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1599603
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61369}

infra/mb/mb_config.pyl

@@ -92,6 +92,7 @@
       'V8 Linux gcc': 'release_x86_gcc',
       'V8 Linux64 gcc - debug': 'debug_x64_gcc',
       # FYI.
+      'V8 iOS - sim': 'release_x64_ios_simulator',
       'V8 Linux64 - debug - perfetto - builder': 'debug_x64_perfetto',
       'V8 Linux64 - pointer compression': 'release_x64_pointer_compression',
       'V8 Linux64 - arm64 - sim - pointer compression - builder':
@@ -192,6 +193,7 @@
       'v8_android_arm64_compile_dbg': 'debug_android_arm64',
       'v8_android_arm64_n5x_rel_ng': 'release_android_arm64',
       'v8_fuchsia_rel_ng': 'release_x64_fuchsia_trybot',
+      'v8_ios_simulator': 'release_x64_ios_simulator',
       'v8_linux_noembed_rel_ng': 'release_x86_noembed_trybot',
       'v8_linux_rel_ng': 'release_x86_gcmole_trybot',
       'v8_linux_optional_rel_ng': 'release_x86_trybot',
@@ -436,6 +438,8 @@
     'release_x64_gcc_coverage': [
       'release_bot', 'x64', 'coverage', 'gcc', 'no_custom_libcxx',
       'no_sysroot'],
+    'release_x64_ios_simulator': [
+      'release_bot', 'x64', 'ios_simulator'],
     'release_x64_internal': [
       'release_bot', 'x64', 'v8_snapshot_internal'],
     'release_x64_jumbo': [
@@ -651,6 +655,10 @@
       'gn_args': 'arm_float_abi="hard"',
     },
 
+    'ios_simulator': {
+      'gn_args': 'target_cpu="x64" target_os="ios"',
+    },
+
     'jumbo': {
       'gn_args': 'use_jumbo_build=true',
     },