add missing symbols for mmc on rpi

target/linux/config/Config.in.block

@@ -90,6 +90,12 @@ config ADK_KERNEL_MMC_SDHCI_IO_ACCESSORS
 config ADK_KERNEL_MMC_SDHCI_PLTFM
 	boolean
 
+config ADK_KERNEL_MMC_BCM2835
+	boolean
+
+config ADK_KERNEL_MMC_BCM2835_DMA
+	boolean
+
 config ADK_KERNEL_MMC_SDHCI_BCM2708_DMA
 	boolean
 
@@ -319,6 +325,8 @@ config ADK_KERNEL_MMC_SDHCI_BCM2708
 	select ADK_KERNEL_MMC_SDHCI_IO_ACCESSORS
 	select ADK_KERNEL_MMC_SDHCI_PLTFM
 	select ADK_KERNEL_MMC_SDHCI_BCM2708_DMA
+	select ADK_KERNEL_MMC_BCM2835
+	select ADK_KERNEL_MMC_BCM2835_DMA
 	depends on ADK_TARGET_SYSTEM_RASPBERRY_PI
 	default y if ADK_TARGET_SYSTEM_RASPBERRY_PI
 	default n