[PATCH] ppc64: COMMAND_LINE_SIZE fix

In file included from arch/ppc64/kernel/setup.c:37:
include/asm/machdep.h:116: `COMMAND_LINE_SIZE' undeclared here (not in a function)
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-ppc64/machdep.h

@@ -14,6 +14,8 @@
 #include <linux/init.h>
 #include <linux/dma-mapping.h>
 
+#include <asm/setup.h>
+
 struct pt_regs;
 struct pci_bus;	
 struct device_node;