ODROID-C5: config: use watchdog sysfs

Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>
Change-Id: I9114d90f29a7b160c0537b0ebbde785d58839036
diff --git a/arch/arm64/configs/odroidc5_defconfig b/arch/arm64/configs/odroidc5_defconfig
index 0d70964..aacb5d1 100644
--- a/arch/arm64/configs/odroidc5_defconfig
+++ b/arch/arm64/configs/odroidc5_defconfig
@@ -3318,7 +3318,7 @@
 # CONFIG_WATCHDOG_NOWAYOUT is not set
 CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED=y
 CONFIG_WATCHDOG_OPEN_TIMEOUT=0
-# CONFIG_WATCHDOG_SYSFS is not set
+CONFIG_WATCHDOG_SYSFS=y
 # CONFIG_WATCHDOG_HRTIMER_PRETIMEOUT is not set
 
 #