Use __u32 for elf_addr_t in <asm-powerpc/elf.h>, not u32. It's user-visible.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

include/asm-powerpc/elf.h

@@ -129,7 +129,7 @@ typedef elf_greg_t32 elf_gregset_t32[ELF_NGREG];
   /* Assumption: ELF_ARCH == EM_PPC and ELF_CLASS == ELFCLASS32 */
   typedef elf_greg_t32 elf_greg_t;
   typedef elf_gregset_t32 elf_gregset_t;
-# define elf_addr_t u32
+# define elf_addr_t __u32
 #endif /* ELF_ARCH */
 
 /* Floating point registers */