[PATCH] powerpc: correct the NR_CPUS description text

Update the help text to match the allowed range.
Signed-off-by: NOlaf Hering <olh@suse.de>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/Kconfig

@@ -227,7 +227,7 @@ config SMP
 	  If you don't know what to do here, say N.
 
 config NR_CPUS
-	int "Maximum number of CPUs (2-32)"
+	int "Maximum number of CPUs (2-128)"
 	range 2 128
 	depends on SMP
 	default "32" if PPC64