S3C: DMA: Change argument of s3c2410_dma_devconfig

All other functions have the channel argument of type 'unsigned int'
the s3c2410_dma_devconfig also accept the same value as argument but
treat it as type 'int'. Remove this anomaly by make it 'unsigned int'.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

arch/arm/mach-s3c64xx/dma.c

@@ -414,7 +414,7 @@ err_buff:
 EXPORT_SYMBOL(s3c2410_dma_enqueue);
 
 
-int s3c2410_dma_devconfig(int channel,
+int s3c2410_dma_devconfig(unsigned int channel,
 			  enum s3c2410_dmasrc source,
 			  unsigned long devaddr)
 {