simpleperf: build simpleperf instead of simpleperf32 on gce_x86.

Bug: http://b/77219275
Test: build manually.
Change-Id: I9082fee3b31b7eb8e90096262c11d1875cbf4e64
(cherry picked from commit 170cb4963a73aa70e31667d94d8efcaabd89ba25)
1 file changed