Expand seccomp whitelist

Bug: 34817266
Test: Boots, app starts
Change-Id: I39026064ec6c7130256ae463163c1f7634e3bdd4

init/seccomp.cpp

@@ -221,6 +221,9 @@ bool set_seccomp_filter() {
     // b/34719286
     AllowSyscall(f, 351); // __NR_eventfd
 
+    // b/34817266
+    AllowSyscall(f, 252); // __NR_epoll_wait
+
     // arm32-on-arm64 only filter - autogenerated from bionic syscall usage
     for (size_t i = 0; i < arm_filter_size; ++i)
         f.push_back(arm_filter[i]);