ls102xa: ifc: nor: fix the write issue when bytes unaligned

Add define CONFIG_SYS_WRITE_SWAPPED_DATA.
For LS1021AQDS and LS1021QTWR nor flash write should swap the
bytes when handle unaligned tail bytes.

Because of the ending, if the date bus width is 16-bits and the
number of bytes is odd, we should swap the byte when write the
last one.

Signed-off-by: Yuan Yao <yao.yuan@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/include/configs/ls1021aqds.h b/include/configs/ls1021aqds.h
index 8954d9d..bb9fbed 100644
--- a/include/configs/ls1021aqds.h
+++ b/include/configs/ls1021aqds.h
@@ -115,6 +115,7 @@
 #define CONFIG_SYS_FLASH_QUIET_TEST
 #define CONFIG_FLASH_SHOW_PROGRESS	45
 #define CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
+#define CONFIG_SYS_WRITE_SWAPPED_DATA
 
 #define CONFIG_SYS_MAX_FLASH_BANKS	2	/* number of banks */
 #define CONFIG_SYS_MAX_FLASH_SECT	1024	/* sectors per device */