Put back the poll declarations into priv.h

That are, poll constants.

include/libssh/libssh.h

@@ -376,13 +376,6 @@ int ssh_userauth_kbdint_setanswer(SSH_SESSION *session, unsigned int i,
     const char *answer);
 
 /* poll.c */
-#define POLLIN    0x001  /* There is data to read.  */
-#define POLLPRI   0x002  /* There is urgent data to read.  */
-#define POLLOUT   0x004  /* Writing now will not block.  */
-
-#define POLLERR   0x008  /* Error condition.  */
-#define POLLHUP   0x010  /* Hung up.  */
-#define POLLNVAL  0x020  /* Invalid polling request.  */
 
 typedef struct ssh_poll_ctx SSH_POLL_CTX;
 typedef struct ssh_poll SSH_POLL;

include/libssh/priv.h

@@ -144,6 +144,15 @@ typedef struct pollfd_s {
   short revents;    /* returned events */
 } pollfd_t;
 
+/* poll.c */
+#define POLLIN    0x001  /* There is data to read.  */
+#define POLLPRI   0x002  /* There is urgent data to read.  */
+#define POLLOUT   0x004  /* Writing now will not block.  */
+
+#define POLLERR   0x008  /* Error condition.  */
+#define POLLHUP   0x010  /* Hung up.  */
+#define POLLNVAL  0x020  /* Invalid polling request.  */
+
 typedef unsigned long int nfds_t;
 #endif /* HAVE_POLL */