mtd mxc nand: Fix ECC state after read_page_raw_syndrome()

mxc_nand_read_page_raw_syndrome() should reenable ECC upon exit. This fixes ECC
errors left uncorrected after a call to this function.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 7a180e1..2ae41dc 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -470,7 +470,7 @@
 	size = mtd->oobsize - (oob - chip->oob_poi);
 	if (size)
 		chip->read_buf(mtd, oob, size);
-	_mxc_nand_enable_hwecc(mtd, 0);
+	_mxc_nand_enable_hwecc(mtd, 1);
 
 	return 0;
 }