mtd: nand: support GPMI NAND driver for i.MX8

enable the GPMI NAND driver for i.MX8, i.MX8 use similar controller as
i.MX8M

- register definition for i.mx8
- DMA structure must be 32bit address

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 655e79f..1993c1d 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -44,7 +44,7 @@
 
 config APBH_DMA
 	bool "Support APBH DMA"
-	depends on MX23 || MX28 || MX6 || MX7 || IMX8M
+	depends on MX23 || MX28 || MX6 || MX7 || IMX8 || IMX8M
 	help
 	  Enable APBH DMA driver.