sunxi: nand: Add basic sunxi NAND driver for SPL with DMA support

This driver adds NAND support to SPL.
It was tested on Allwinner A20.

Signed-off-by: Peter Gielda <pgielda@antmicro.com>
Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
Signed-off-by: Mateusz Holenko <mholenko@antmicro.com>
Signed-off-by: Piotr Zierhoffer <pzierhoffer@antmicro.com>
Signed-off-by: Karol Gugala <kgugala@antmicro.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 347ea62..b40dda8 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -12,6 +12,7 @@
 endif
 
 obj-$(CONFIG_SPL_NAND_AM33XX_BCH) += am335x_spl_bch.o
+obj-$(CONFIG_SPL_NAND_SUNXI) += sunxi_nand_spl.o
 obj-$(CONFIG_SPL_NAND_DENALI) += denali_spl.o
 obj-$(CONFIG_SPL_NAND_DOCG4) += docg4_spl.o
 obj-$(CONFIG_SPL_NAND_SIMPLE) += nand_spl_simple.o