add c structures for SoC access

* add's c structures for SoC access to pheriperials head files

Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
diff --git a/include/asm-arm/arch-at91/io.h b/include/asm-arm/arch-at91/io.h
index f09b2df..38d185e 100644
--- a/include/asm-arm/arch-at91/io.h
+++ b/include/asm-arm/arch-at91/io.h
@@ -23,6 +23,8 @@
 
 #include <asm/io.h>
 
+#ifdef CONFIG_AT91_LEGACY
+
 static inline unsigned int at91_sys_read(unsigned int reg_offset)
 {
 	void *addr = (void *)AT91_BASE_SYS;
@@ -36,5 +38,6 @@
 
 	__raw_writel(value, addr + reg_offset);
 }
+#endif
 
 #endif