drivers: wifi: eswifi: Add ZSOCK_POLLOUT revent in eswifi_socket_poll to enable send operation.

Author: davidalo

drivers/wifi/eswifi/eswifi_socket_offload.c

@@ -14,6 +14,7 @@ LOG_MODULE_DECLARE(LOG_MODULE_NAME);
 #include <stdlib.h>
 #include <errno.h>
 
+#include <zephyr/posix/fcntl.h>
 #include <zephyr/net/socket_offload.h>
 #include <zephyr/net/tls_credentials.h>
 
@@ -515,6 +516,10 @@ static int eswifi_socket_poll(struct zsock_pollfd *fds, int nfds, int msecs)
 		return -1;
 	}
 
+	if ((fds[0].events & ZSOCK_POLLOUT)) {
+		fds[0].revents = ZSOCK_POLLOUT;
+	}
+
 	if (!k_fifo_is_empty(&socket->fifo)) {
 		goto done;
 	}