ARM: EXYNOS4: use dma-pl330 device name for clock

This change replaces s3c-pl330.x clock device names with dma-pl330.x,
otherwise there won't be a correspondence between clock device name
and amba device name, thus clocks can't be enabled.

Fixes runtime errors on clk_get() from drivers/dma/pl330.c:
  dma-pl330 dma-pl330.0: Cannot get operation clock.
  dma-pl330: probe of dma-pl330.0 failed with error -22

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Boojin Kim <boojin.kim@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-exynos4/clock.c

@@ -455,12 +455,12 @@ static struct clk init_clocks_off[] = {
 		.ctrlbit	= (1 << 10),
 	}, {
 		.name		= "pdma",
-		.devname	= "s3c-pl330.0",
+		.devname	= "dma-pl330.0",
 		.enable		= exynos4_clk_ip_fsys_ctrl,
 		.ctrlbit	= (1 << 0),
 	}, {
 		.name		= "pdma",
-		.devname	= "s3c-pl330.1",
+		.devname	= "dma-pl330.1",
 		.enable		= exynos4_clk_ip_fsys_ctrl,
 		.ctrlbit	= (1 << 1),
 	}, {