[MIPS] Rename Alchemy processor configs into CONFIG_SOC_*

CONFIG_SOC_AU1X00

  Common Alchemy Au1x00 stuff. All Alchemy processor based machines
  need to have this config as a system type specifier.

CONFIG_SOC_AU1000, CONFIG_SOC_AU1100, CONFIG_SOC_AU1200,
CONFIG_SOC_AU1500, CONFIG_SOC_AU1550

  Machine type specifiers. Each port should have one of aboves.

Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
diff --git a/include/configs/pb1x00.h b/include/configs/pb1x00.h
index 181cd11..2caa641 100644
--- a/include/configs/pb1x00.h
+++ b/include/configs/pb1x00.h
@@ -30,16 +30,16 @@
 
 #define CONFIG_MIPS32		1  /* MIPS32 CPU core	*/
 #define CONFIG_PB1X00		1
-#define CONFIG_AU1X00		1  /* alchemy series cpu */
+#define CONFIG_SOC_AU1X00	1  /* alchemy series cpu */
 
 #ifdef CONFIG_PB1000
-#define CONFIG_AU1000		1
+#define CONFIG_SOC_AU1000	1
 #else
 #ifdef CONFIG_PB1100
-#define CONFIG_AU1100		1
+#define CONFIG_SOC_AU1100	1
 #else
 #ifdef CONFIG_PB1500
-#define CONFIG_AU1500		1
+#define CONFIG_SOC_AU1500	1
 #else
 #error "No valid board set"
 #endif