Kernel: Add load_keymap syscall and load Finnish keymap in init

libc/include/sys/banan-os.h

@@ -34,6 +34,8 @@ return value: 0 on success, -1 on failure and errno set to the error
 int tty_ctrl(int fildes, int command, int flags);
 int poweroff(int command);
 
+int load_keymap(const char* path);
+
 __END_DECLS
 
 #endif

libc/include/sys/syscall.h

@@ -62,6 +62,7 @@ __BEGIN_DECLS
 #define SYS_MSYNC 61
 #define SYS_PREAD 62
 #define SYS_CHOWN 63
+#define SYS_LOAD_KEYMAP 64
 
 __END_DECLS