[tools] Trigger v8_linux64_atom_perf_try on swarming

R=machenbach@chromium.org

Bug: chromium:902428
Change-Id: Id9a727d83c2a69e4ffd20e761c274cba2c75404a
Reviewed-on: https://chromium-review.googlesource.com/c/1320889Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57336}

tools/try_perf.py

@@ -24,6 +24,7 @@ BOTS = {
 # swarming bucket instead of internal Buildbot master.
 SWARMING_BOTS = [
   'v8_linux64_perf_try',
+  'v8_linux64_atom_perf_try',
   'v8_pixel2_perf_try',
   'v8_nokia1_perf_try',
 ]