nds32: include <asm/arch-*/*.h> instead of <asm/arch/*.h>

There are only two SoC-specific headers for this architecture:
 - arch/nds32/include/asm/arch-ag101/ag101.h
 - arch/nds32/include/asm/arch-ag102/ag102.h

Those two have different file names, so there is no advantage to
include them via symbolic linked directory.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

include/configs/adp-ag101.h

@@ -9,7 +9,7 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
-#include <asm/arch/ag101.h>
+#include <asm/arch-ag101/ag101.h>
 
 /*
  * CPU and Board Configuration Options

include/configs/adp-ag101p.h

@@ -9,7 +9,7 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
-#include <asm/arch/ag101.h>
+#include <asm/arch-ag101/ag101.h>
 
 /*
  * CPU and Board Configuration Options

include/configs/adp-ag102.h

@@ -8,7 +8,7 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
-#include <asm/arch/ag102.h>
+#include <asm/arch-ag102/ag102.h>
 
 /*
  * CPU and Board Configuration Options