redbull-sepolicy: allow twoshay service to set priority

Bug: 168784310

Test: Confirmed thread priority configured correctly using ps command.
Test: Latency improvements observed, new measurements updated to bug.

Signed-off-by: Mark Chang <changmark@google.com>
Change-Id: I61fdec28aad558a2f971a72aaad093e03acbf678
Merged-In: I61fdec28aad558a2f971a72aaad093e03acbf678
(cherry picked from commit 8b825e622ef37fbc40872963f5e862d1f1465f31)
diff --git a/vendor/google/twoshay.te b/vendor/google/twoshay.te
index fc33822..d55a414 100644
--- a/vendor/google/twoshay.te
+++ b/vendor/google/twoshay.te
@@ -4,3 +4,4 @@
 init_daemon_domain(twoshay)
 
 allow twoshay touch_offload_device:chr_file rw_file_perms;
+allow twoshay twoshay:capability sys_nice;