OMAPDSS: DISPC: remove dispc fck uses

The previous patch changes dispc to get the dispc fck rate from dss core
driver. This was the only use of the dispc fck in dispc, and thus we can
now remove the clock handling.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/dss/dispc.c

@@ -96,7 +96,6 @@ static struct {
 	int		ctx_loss_cnt;
 
 	int irq;
-	struct clk *dss_clk;
 
 	u32 fifo_size[DISPC_MAX_NR_FIFOS];
 	/* maps which plane is using a fifo. fifo-id -> plane-id */
@@ -3619,7 +3618,6 @@ static int __init omap_dispchw_probe(struct platform_device *pdev)
 	u32 rev;
 	int r = 0;
 	struct resource *dispc_mem;
-	struct clk *clk;
 
 	dispc.pdev = pdev;
 
@@ -3646,15 +3644,6 @@ static int __init omap_dispchw_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	clk = clk_get(&pdev->dev, "fck");
-	if (IS_ERR(clk)) {
-		DSSERR("can't get fck\n");
-		r = PTR_ERR(clk);
-		return r;
-	}
-
-	dispc.dss_clk = clk;
-
 	pm_runtime_enable(&pdev->dev);
 
 	r = dispc_runtime_get();
@@ -3675,7 +3664,6 @@ static int __init omap_dispchw_probe(struct platform_device *pdev)
 
 err_runtime_get:
 	pm_runtime_disable(&pdev->dev);
-	clk_put(dispc.dss_clk);
 	return r;
 }
 
@@ -3683,8 +3671,6 @@ static int __exit omap_dispchw_remove(struct platform_device *pdev)
 {
 	pm_runtime_disable(&pdev->dev);
 
-	clk_put(dispc.dss_clk);
-
 	return 0;
 }