[ARM] 4711/1: pxa: mmc: move DMA specific code to platform layer

This patch is to move pxamci DMA specific code to corresponding
platform layer because using DRCMRRXMMC/DRCMRTXMMC in pxamci.c makes
the driver code dedicated to platform which is not extensible.

It is applicable to all pxa platforms.

Signed-off-by: Bridge Wu <bridge.wu@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-pxa/generic.c

@@ -259,6 +259,16 @@ static struct resource pxamci_resources[] = {
 		.end	= IRQ_MMC,
 		.flags	= IORESOURCE_IRQ,
 	},
+	[2] = {
+		.start	= 21,
+		.end	= 21,
+		.flags	= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start	= 22,
+		.end	= 22,
+		.flags	= IORESOURCE_DMA,
+	},
 };
 
 static u64 pxamci_dmamask = 0xffffffffUL;