printf spinlock + remove DEPRECATED stuff + begin separating x86 stuff

src/io/kbd/ps2.c

@@ -216,10 +216,10 @@ void keyboard_handler()
 
                     if (c) {
                         if (c == '\n') {
-                            _putchar('\r');
+                            internal_putc('\r', NULL);
                         }
-                        // Should probably have a keyboard buffer here... instead of this
-                        _putchar(c);
+
+                        internal_putc(c, NULL);
                         keyboard_putchar(c);
                     }
                 }