Disable keyboard repeat rate if no keyboard is enabled

--- ./arch/i386/boot/setup.S.bad	2005-11-11 21:49:14 +0100
+++ ./arch/i386/boot/setup.S	2008-02-17 13:34:03 +0100
@@ -390,10 +390,13 @@
 	int	$0x15
 	movw	%ax, (2)
 
-# Set the keyboard repeat rate to the max
+#ifdef CONFIG_INPUT_KEYBOARD
+# Set the keyboard repeat rate to the max. This may take several
+# seconds if the system has no keyboard controller.
 	movw	$0x0305, %ax
 	xorw	%bx, %bx
 	int	$0x16
+#endif
 
 # Check for video adapter and its parameters and allow the
 # user to browse video modes.