CRIS v32: Add defines for udelay and ndelay in arch-v32/delay.h

Both of these are implemented using cris_delay10ns().

include/asm-cris/arch-v32/delay.h

 #ifndef _ASM_CRIS_ARCH_DELAY_H
 #define _ASM_CRIS_ARCH_DELAY_H
 
+extern void cris_delay10ns(u32 n10ns);
+#define udelay(u) cris_delay10ns((u)*100)
+#define ndelay(n) cris_delay10ns(((n)+9)/10)
+
+/*
+ * Not used anymore for udelay or ndelay.  Referenced by
+ * e.g. init/calibrate.c.  All other references are likely bugs;
+ * should be replaced by mdelay, udelay or ndelay.
+ */
+
 static inline void
 __delay(int loops)
 {