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/ls1021atwr.h b/include/configs/ls1021atwr.h
index 96b1547..34cec65 100644
--- a/include/configs/ls1021atwr.h
+++ b/include/configs/ls1021atwr.h
@@ -99,6 +99,7 @@
 #define CONFIG_SYS_FLASH_BANKS_LIST	{ CONFIG_SYS_FLASH_BASE_PHYS }
 
 #define CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
+#define CONFIG_SYS_WRITE_SWAPPED_DATA
 
 /* CPLD */