[POWERPC] bootwrapper: Declare udelay() in ops.h

Declarations in various users are removed.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index a10bf5a..e45b364 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -193,5 +193,6 @@
 	void *_platform_stack_top = _bss_stack + sizeof(_bss_stack);
 
 extern unsigned long timebase_period_ns;
+void udelay(long delay);
 
 #endif /* _PPC_BOOT_OPS_H_ */