Kernel: Alias MAXNAMLEN to NAME_MAX

MAXNAMLEN is the BSD name for NAME_MAX, as used by some programs.

Kernel/API/POSIX/dirent.h

@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <Kernel/API/POSIX/sys/limits.h>
 #include <Kernel/API/POSIX/sys/types.h>
 
 #ifdef __cplusplus
@@ -33,6 +34,8 @@ enum {
 #define DT_WHT DT_WHT
 };
 
+#define MAXNAMLEN NAME_MAX
+
 #ifdef __cplusplus
 }
 #endif