Fix socket poll events values

Author: DaniElectra

libctru/include/poll.h

@@ -1,11 +1,15 @@
 #pragma once
 
-#define POLLIN		0x01
-#define POLLPRI		0x02
-#define POLLHUP		0x04 // unknown ???
-#define POLLERR		0x08 // probably
-#define POLLOUT		0x10
-#define POLLNVAL	0x20
+#define POLLRDNORM      0x01
+#define POLLRDBAND      0x02
+#define POLLPRI         0x04
+#define POLLWRNORM      0x08
+#define POLLWRBAND      0x10
+#define POLLERR         0x20
+#define POLLHUP         0x40
+#define POLLNVAL        0x80
+#define POLLIN          (POLLRDNORM | POLLRDBAND)
+#define POLLOUT         POLLWRNORM
 
 typedef unsigned int nfds_t;