ppc64: Fix some warnings in the ppc64 build, from Andrew Morton

arch/ppc64/boot/main.c

@@ -12,12 +12,11 @@
 #include "ppc32-types.h"
 #include "zlib.h"
 #include <linux/elf.h>
+#include <linux/string.h>
 #include <asm/processor.h>
 #include <asm/page.h>
 #include <asm/bootinfo.h>
 
-void memmove(void *dst, void *im, int len);
-
 extern void *finddevice(const char *);
 extern int getprop(void *, const char *, void *, int);
 extern void printk(char *fmt, ...);

arch/ppc64/kernel/prom.c

@@ -2040,11 +2040,11 @@ prom_bi_rec_verify(struct bi_record *bi_recs)
 	if ( bi_recs == NULL || bi_recs->tag != BI_FIRST )
 		return NULL;
 
-	last = (struct bi_record *)bi_recs->data[0];
+	last = (struct bi_record *)(long)bi_recs->data[0];
 	if ( last == NULL || last->tag != BI_LAST )
 		return NULL;
 
-	first = (struct bi_record *)last->data[0];
+	first = (struct bi_record *)(long)last->data[0];
 	if ( first == NULL || first != bi_recs )
 		return NULL;