board: turris_mox: Fix watchdog macro name

The macro name CONFIG_WDT_ARMADA_3720 is called CONFIG_WDT_ARMADA_37XX
instead. Fix this so that watchdog really is enabled in board_init.

Signed-off-by: Marek Behun <marek.behun@nic.cz>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/CZ.NIC/turris_mox/turris_mox.c b/board/CZ.NIC/turris_mox/turris_mox.c
index 130d4c6..b6a0ca4 100644
--- a/board/CZ.NIC/turris_mox/turris_mox.c
+++ b/board/CZ.NIC/turris_mox/turris_mox.c
@@ -9,13 +9,13 @@
 #include <spi.h>
 #include <linux/string.h>
 
-#ifdef CONFIG_WDT_ARMADA_3720
+#ifdef CONFIG_WDT_ARMADA_37XX
 #include <wdt.h>
 #endif
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#ifdef CONFIG_WDT_ARMADA_3720
+#ifdef CONFIG_WDT_ARMADA_37XX
 static struct udevice *watchdog_dev;
 
 void watchdog_reset(void)
@@ -41,7 +41,7 @@
 	/* address of boot parameters */
 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 
-#ifdef CONFIG_WDT_ARMADA_3720
+#ifdef CONFIG_WDT_ARMADA_37XX
 	if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) {
 		printf("Cannot find Armada 3720 watchdog!\n");
 	} else {