LibC: Make poll and epoll macros match with each other

This was an assertion in one of my ports and I couldn't be bothered to
write a patch for it :D

userspace/libraries/LibC/include/poll.h

@@ -19,14 +19,14 @@ struct pollfd
 typedef unsigned long nfds_t;
 
 #define POLLIN		0x001
-#define POLLRDNORM	0x002
-#define POLLRDBAND	0x004
-#define POLLPRI		0x008
-#define POLLOUT		0x010
-#define POLLWRNORM	0x020
-#define POLLWRBAND	0x040
-#define POLLERR		0x080
-#define POLLHUP		0x100
+#define POLLOUT		0x002
+#define POLLERR		0x004
+#define POLLHUP		0x008
+#define POLLPRI		0x010
+#define POLLRDNORM	0x020
+#define POLLRDBAND	0x040
+#define POLLWRNORM	0x080
+#define POLLWRBAND	0x100
 #define POLLNVAL	0x200
 
 int poll(struct pollfd fds[], nfds_t nfds, int timeout);