ARM: davinci: use is IS_ENABLED macro

This patches replaces #if defined() by IS_ENABLED macro, which provides
better readability.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
index 4c48a36..df135de 100644
--- a/arch/arm/mach-davinci/devices.c
+++ b/arch/arm/mach-davinci/devices.c
@@ -119,7 +119,7 @@
 	platform_device_register(&ide_device);
 }
 
-#if	defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
+#if IS_ENABLED(CONFIG_MMC_DAVINCI)
 
 static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);