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/board-neuros-osd2.c b/arch/arm/mach-davinci/board-neuros-osd2.c
index 1c98107..ea6728b 100644
--- a/arch/arm/mach-davinci/board-neuros-osd2.c
+++ b/arch/arm/mach-davinci/board-neuros-osd2.c
@@ -167,20 +167,9 @@
 	.version	= MMC_CTLR_VERSION_1
 };
 
+#define HAS_ATA		IS_ENABLED(CONFIG_BLK_DEV_PALMCHIP_BK3710)
 
-#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
-	defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
-#define HAS_ATA 1
-#else
-#define HAS_ATA 0
-#endif
-
-#if defined(CONFIG_MTD_NAND_DAVINCI) || \
-	defined(CONFIG_MTD_NAND_DAVINCI_MODULE)
-#define HAS_NAND 1
-#else
-#define HAS_NAND 0
-#endif
+#define HAS_NAND	IS_ENABLED(CONFIG_MTD_NAND_DAVINCI)
 
 static __init void davinci_ntosd2_init(void)
 {