ARM: davinci: fix a problematic usage of WARN()

WARN() takes a condition and a format string. The condition was
omitted. So I added it.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

arch/arm/mach-davinci/board-dm355-evm.c

@@ -384,9 +384,7 @@ static __init void dm355_evm_init(void)
 	dm355evm_dm9000_rsrc[2].start = gpio_to_irq(1);
 
 	aemif = clk_get(&dm355evm_dm9000.dev, "aemif");
-	if (IS_ERR(aemif))
-		WARN("%s: unable to get AEMIF clock\n", __func__);
-	else
+	if (!WARN(IS_ERR(aemif), "unable to get AEMIF clock\n"))
 		clk_prepare_enable(aemif);
 
 	platform_add_devices(davinci_evm_devices,

arch/arm/mach-davinci/board-dm355-leopard.c

@@ -242,9 +242,7 @@ static __init void dm355_leopard_init(void)
 	dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9);
 
 	aemif = clk_get(&dm355leopard_dm9000.dev, "aemif");
-	if (IS_ERR(aemif))
-		WARN("%s: unable to get AEMIF clock\n", __func__);
-	else
+	if (!WARN(IS_ERR(aemif), "unable to get AEMIF clock\n"))
 		clk_prepare_enable(aemif);
 
 	platform_add_devices(davinci_leopard_devices,