[ARM] 4270/2: mach-s3c2443/irq.c off by one error in dma irqs

This patch corrects an error when demuxing the DMA irq's
DMA1 was used as a base and this should have been DMA0.
Without this fix we do not process DMA0 irq's and the
system effectively locks up in a loop trying the process
the irq it never can.
Signed-off-by: NGraeme Gregory <gg@opensource.wolfsonmicro.com>
Acked-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-s3c2443/irq.c

@@ -137,7 +137,7 @@ static struct irq_chip s3c2443_irq_lcd = {
 
 static void s3c2443_irq_demux_dma(unsigned int irq, struct irq_desc *desc)
 {
-	s3c2443_irq_demux(IRQ_S3C2443_DMA1, 6);
+	s3c2443_irq_demux(IRQ_S3C2443_DMA0, 6);
 }
 
 #define INTMSK_DMA	(1UL << (IRQ_S3C2443_DMA - IRQ_EINT0))