omap: McBSP: Fix potential memory leak in omap_mcbsp_remove

Function omap_mcbsp_probe allocates struct omap_mcbsp *mcbsp but it is not
freed in omap_mcbsp_remove. Fix this, remove unneeded structure cleanups
and clk_disable calls since they are not needed here.

This is not problem currently but becomes if the mcbsp driver is ever
modularized.
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/plat-omap/mcbsp.c

@@ -1836,17 +1836,11 @@ static int __devexit omap_mcbsp_remove(struct platform_device *pdev)
 
 		omap34xx_device_exit(mcbsp);
 
-		clk_disable(mcbsp->fclk);
-		clk_disable(mcbsp->iclk);
 		clk_put(mcbsp->fclk);
 		clk_put(mcbsp->iclk);
 
 		iounmap(mcbsp->io_base);
-
-		mcbsp->fclk = NULL;
-		mcbsp->iclk = NULL;
-		mcbsp->free = 0;
-		mcbsp->dev = NULL;
+		kfree(mcbsp);
 	}
 
 	return 0;