Add sched_setscheduler to the arm64 policy.

To support pthread_attr_setinheritsched for any code that uses pthread_create.

Bug: http://b/67471710
Test: no rolling configstore crashes when booting with the pthread change
Change-Id: I5847adba36b6a5d13b7bd20f955e432c14ce78b8
diff --git a/configstore/1.1/default/seccomp_policy/configstore@1.1-arm64.policy b/configstore/1.1/default/seccomp_policy/configstore@1.1-arm64.policy
index 43bf1fa..e04aa2a 100644
--- a/configstore/1.1/default/seccomp_policy/configstore@1.1-arm64.policy
+++ b/configstore/1.1/default/seccomp_policy/configstore@1.1-arm64.policy
@@ -28,6 +28,7 @@
 write: 1
 fstat: 1
 clone: 1
+sched_setscheduler: 1
 munmap: 1
 lseek: 1
 sigaltstack: 1