Correct SPL uses of HW_WATCHDOG

This converts 2 usages of this option to the non-SPL form, since there is
no SPL_HW_WATCHDOG defined in Kconfig

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
diff --git a/drivers/crypto/hash/hash_sw.c b/drivers/crypto/hash/hash_sw.c
index 553c068..d8065d6 100644
--- a/drivers/crypto/hash/hash_sw.c
+++ b/drivers/crypto/hash/hash_sw.c
@@ -244,7 +244,7 @@
 	if (rc)
 		return rc;
 
-	if (CONFIG_IS_ENABLED(HW_WATCHDOG) || CONFIG_IS_ENABLED(WATCHDOG)) {
+	if (IS_ENABLED(CONFIG_HW_WATCHDOG) || CONFIG_IS_ENABLED(WATCHDOG)) {
 		cur = ibuf;
 		end = ibuf + ilen;