nand: atmel: Add pmecc driver

Add driver for atmel pmecc. This implementation is ported from
Linux. The reference taken is linux-5.4-at91.

Signed-off-by: Balamanikandan Gunasundar <balamanikandan.gunasundar@microchip.com>
diff --git a/drivers/mtd/nand/raw/atmel/Makefile b/drivers/mtd/nand/raw/atmel/Makefile
index 6708416..e044ff5 100644
--- a/drivers/mtd/nand/raw/atmel/Makefile
+++ b/drivers/mtd/nand/raw/atmel/Makefile
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_DM_NAND_ATMEL)	+= atmel-nand-controller.o
+obj-$(CONFIG_DM_NAND_ATMEL)	+= atmel-nand-controller.o atmel-pmecc.o
 
 atmel-nand-controller-objs	:= nand-controller.o
+atmel-pmecc-objs		:= pmecc.o