PXA: Rename CONFIG_PXA2[57]X to CONFIG_CPU_PXA2[57]X

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
diff --git a/include/configs/palmtc.h b/include/configs/palmtc.h
index 026e183..d1fef25 100644
--- a/include/configs/palmtc.h
+++ b/include/configs/palmtc.h
@@ -27,7 +27,7 @@
 /*
  * High Level Board Configuration Options
  */
-#define	CONFIG_PXA250			1	/* Intel PXA255 CPU */
+#define	CONFIG_CPU_PXA25X			1	/* Intel PXA255 CPU */
 #define	CONFIG_PALMTC			1	/* Palm Tungsten|C board */
 
 /*