[POWERPC] bootwrapper: Use `unsigned long' for malloc sizes

Use `unsigned long' for malloc sizes, to match common practice and types used
by most callers and callees.
Also use `unsigned long' for integers representing pointers in simple_alloc.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@eu.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/boot/of.c

@@ -173,7 +173,7 @@ static void *claim(unsigned long virt, unsigned long size, unsigned long align)
 	return (void *) virt;
 }
 
-static void *of_try_claim(u32 size)
+static void *of_try_claim(unsigned long size)
 {
 	unsigned long addr = 0;