Build fix for certain configurations.

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

include/asm-mips/bugs.h

@@ -8,6 +8,7 @@
 #define _ASM_BUGS_H
 
 #include <linux/config.h>
+#include <linux/delay.h>
 #include <asm/cpu.h>
 #include <asm/cpu-info.h>