[MIPS] Fix pcspeaker build.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

include/asm-mips/8253pit.h

-/*
- * 8253/8254 Programmable Interval Timer
- */
-
-#ifndef _8253PIT_H
-#define _8253PIT_H
-
-#define PIT_TICK_RATE 	1193182UL
-
-#endif

include/asm-mips/i8253.h

@@ -12,6 +12,8 @@
 #define PIT_CH0			0x40
 #define PIT_CH2			0x42
 
+#define PIT_TICK_RATE		1193182UL
+
 extern spinlock_t i8253_lock;
 
 extern void setup_pit_timer(void);