ftsmc020: move ftsmc020 static mem controller to driver/mtd

Move the header file and definitions of ftsmc020
static memory control unit from a320 SoC folder to
"drivers/mtd" folder.

This change will let other SoC which also use ftsmc020
could share the same header file.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>
diff --git a/include/configs/a320evb.h b/include/configs/a320evb.h
index 5373bcb..4b297f0 100644
--- a/include/configs/a320evb.h
+++ b/include/configs/a320evb.h
@@ -163,7 +163,8 @@
  * Static memory controller configuration
  */
 
-#include <asm/arch/ftsmc020.h>
+#define CONFIG_FTSMC020
+#include <faraday/ftsmc020.h>
 
 #define FTSMC020_BANK0_CONFIG	(FTSMC020_BANK_ENABLE             |	\
 				 FTSMC020_BANK_BASE(PHYS_FLASH_1) |	\
@@ -196,6 +197,7 @@
 	{ FTSMC020_BANK0_CONFIG, FTSMC020_BANK0_TIMING, },	\
 	{ FTSMC020_BANK1_CONFIG, FTSMC020_BANK1_TIMING, },	\
 }
+#endif /* CONFIG_FTSMC020 */
 
 /*-----------------------------------------------------------------------
  * FLASH and environment organization