ANDROID: Update the ABI symbol list and xml

These symbols are used for scheduler vendor hooks.

5 function symbol(s) added
  'void ___update_load_avg(struct sched_avg *, unsigned long int)'
  'int ___update_load_sum(u64, struct sched_avg *, unsigned long int, unsigned long int, int)'
  'void __put_cred(struct cred *)'
  'int __traceiter_android_rvh_update_rt_rq_load_avg(void *, u64, struct rq *, struct task_struct *, int)'
  'const struct cred * get_task_cred(struct task_struct *)'

1 variable symbol(s) added
  'struct tracepoint __tracepoint_android_rvh_update_rt_rq_load_avg'

Bug: 227767048
Change-Id: I0175979f53e121ea977ed904c85096376feed50b
Signed-off-by: Will McVicker <willmcvicker@google.com>