ARM: OMAP4: devices: fixup OMAP4 DMIC platform device error message

Correct DMIC hwmod lockup error message and replace printk() by
pr_err().
Signed-off-by: Sebastien Guiriec <s-guiriec@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/devices.c

@@ -341,7 +341,7 @@ static void __init omap_init_dmic(void)
 
 	oh = omap_hwmod_lookup("dmic");
 	if (!oh) {
-		printk(KERN_ERR "Could not look up mcpdm hw_mod\n");
+		pr_err("Could not look up dmic hw_mod\n");
 		return;
 	}