MT#56374 convert poller_poll to static

Only used internally

Change-Id: Iaeb44e022dd01bc2a7526dcd9a60b69695029cf1

lib/poller.c

@@ -271,7 +271,7 @@ int poller_update_item(struct poller *p, struct poller_item *i) {
 }
 
 
-int poller_poll(struct poller *p, int timeout) {
+static int poller_poll(struct poller *p, int timeout) {
 	int ret, i;
 	struct poller_item_int *it;
 	struct epoll_event evs[128], *ev, e;

lib/poller.h

@@ -42,7 +42,6 @@ void poller_blocked(struct poller *, void *);
 int poller_isblocked(struct poller *, void *);
 void poller_error(struct poller *, void *);
 
-int poller_poll(struct poller *, int);
 void poller_loop(void *);
 void poller_loop2(void *);