[Refactor and sync kernel from Openwrt]

[Description]
Refactor and sync kernel from Openwrt
1. NOTE: we change kernel url for ease sync lastest kernel

[Release-log]
N/A

diff --git a/recipes-kernel/linux/linux-mediatek-5.4/generic/pending-5.4/pending-5.4.inc b/recipes-kernel/linux/linux-mediatek-5.4/generic/pending-5.4/pending-5.4.inc
index dd5eed0..51d45de 100644
--- a/recipes-kernel/linux/linux-mediatek-5.4/generic/pending-5.4/pending-5.4.inc
+++ b/recipes-kernel/linux/linux-mediatek-5.4/generic/pending-5.4/pending-5.4.inc
@@ -66,6 +66,7 @@
     file://497-mtd-mtdconcat-add-dt-driver-for-concat-devices.patch \
     file://498-mtd-mtdconcat-select-readwrite-function.patch \
     file://499-mtd-add-nmbm-support.patch \
+    file://500-ubi-add-configurable-rootdev.patch \
     file://530-jffs2_make_lzma_available.patch \
     file://532-jffs2_eofdetect.patch \
     file://600-netfilter_conntrack_flush.patch \