powerpc: Fix wrong error code from ppc32 select syscall

This patch was submitted, discussed, and eventually Acked by everyone, yet
still isn't in the tree.  See:

http://patchwork.ozlabs.org/patch/1240/Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: Arnd Bergmann <arnd@anrdb.de>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/include/asm/systbl.h

@@ -145,7 +145,7 @@ SYSCALL_SPU(setfsuid)
 SYSCALL_SPU(setfsgid)
 SYSCALL_SPU(llseek)
 COMPAT_SYS_SPU(getdents)
-SYSX_SPU(sys_select,ppc32_select,ppc_select)
+SYSX_SPU(sys_select,ppc32_select,sys_select)
 SYSCALL_SPU(flock)
 SYSCALL_SPU(msync)
 COMPAT_SYS_SPU(readv)