Convert CONFIG_APBH_DMA et al to Kconfig

This converts the following to Kconfig:
   CONFIG_APBH_DMA
   CONFIG_APBH_DMA_BURST
   CONFIG_APBH_DMA_BURST8

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Stefan Agner <stefan.agner@toradex.com>
[trini: Add in MMC as well]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 57d2757..a820af6 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -142,6 +142,9 @@
 	bool "MXS NAND support"
 	depends on MX23 || MX28 || MX6 || MX7
 	imply CMD_NAND
+	select APBH_DMA
+	select APBH_DMA_BURST if ARCH_MX6 || ARCH_MX7
+	select APBH_DMA_BURST8 if ARCH_MX6 || ARCH_MX7
 	help
 	  This enables NAND driver for the NAND flash controller on the
 	  MXS processors.