[OE-core] [PATCH] kernel-fitimage.bbclass: fix a wrong conditional check

From: Ming Liu <redacted>

It should check if "${UBOOT_SIGN_ENABLE}" equals to "1" instead of
checking if "${UBOOT_SIGN_ENABLE}" is not empty since it could be "0".

Signed-off-by: Ming Liu <redacted>
---
 meta/classes/kernel-fitimage.bbclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/classes/kernel-fitimage.bbclass b/meta/classes/kernel-fitimage.bbclass
index 5cfd8af99d..993e159c75 100644
--- a/meta/classes/kernel-fitimage.bbclass
+++ b/meta/classes/kernel-fitimage.bbclass

@@ -331,7 +331,7 @@ fitimage_emit_section_config() {
 
 	conf_csum="${FIT_HASH_ALG}"
 	conf_sign_algo="${FIT_SIGN_ALG}"
-	if [ -n "${UBOOT_SIGN_ENABLE}" ] ; then
+	if [ "${UBOOT_SIGN_ENABLE}" = "1" ] ; then
 		conf_sign_keyname="${UBOOT_SIGN_KEYNAME}"
 	fi
 

-- 
2.29.0