Added interrupt handling capabilities for mpc5xxx processors.

Also added Linux like BUG() macros.

include/common.h

@@ -109,6 +109,12 @@ typedef volatile unsigned char	vu_char;
 #define debugX(level,fmt,args...)
 #endif	/* DEBUG */
 
+#define BUG() do { \
+        printf("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
+	panic("BUG!"); \
+} while (0)
+#define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
+
 typedef void (interrupt_handler_t)(void *);
 
 #include <asm/u-boot.h> /* boot information for Linux kernel */