arm: mvebu: turris_omnia: Always enable MMC, SCSI and USB boot targets

U-Boot for Turris Omnia is always compiled with MMC, SCSI and USB support,
so always enable macros for booting from these devices.

Signed-off-by: Pali Rohár <pali@kernel.org>
diff --git a/include/configs/turris_omnia.h b/include/configs/turris_omnia.h
index e8130ac..f2fc374 100644
--- a/include/configs/turris_omnia.h
+++ b/include/configs/turris_omnia.h
@@ -52,28 +52,10 @@
 /* Include the common distro boot environment */
 #ifndef CONFIG_SPL_BUILD
 
-#ifdef CONFIG_MMC
-#define BOOT_TARGET_DEVICES_MMC(func) func(MMC, mmc, 0)
-#else
-#define BOOT_TARGET_DEVICES_MMC(func)
-#endif
-
-#ifdef CONFIG_USB_STORAGE
-#define BOOT_TARGET_DEVICES_USB(func) func(USB, usb, 0)
-#else
-#define BOOT_TARGET_DEVICES_USB(func)
-#endif
-
-#ifdef CONFIG_SCSI
-#define BOOT_TARGET_DEVICES_SCSI(func) func(SCSI, scsi, 0)
-#else
-#define BOOT_TARGET_DEVICES_SCSI(func)
-#endif
-
 #define BOOT_TARGET_DEVICES(func) \
-	BOOT_TARGET_DEVICES_MMC(func) \
-	BOOT_TARGET_DEVICES_SCSI(func) \
-	BOOT_TARGET_DEVICES_USB(func) \
+	func(MMC, mmc, 0) \
+	func(SCSI, scsi, 0) \
+	func(USB, usb, 0) \
 	func(PXE, pxe, na) \
 	func(DHCP, dhcp, na)