[][mt7988][Add append-opteenode in kernel command]

[Description]
Add the command,append-opteenode, to kernel command.
If the optee open in openwrt, it will adds optee node
in kernel dtb automatically.
If not, nothing will happended.

[Release-log]
N/A

Change-Id: I957b33619b06e1b27b1103ba58329350dc146fa8
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7599917
diff --git a/target/linux/mediatek/image/mt7988.mk b/target/linux/mediatek/image/mt7988.mk
index 293f1d6..11f614b 100644
--- a/target/linux/mediatek/image/mt7988.mk
+++ b/target/linux/mediatek/image/mt7988.mk
@@ -39,7 +39,8 @@
   AUTO_AR_CONF := $(TOPDIR)/../../auto_ar_conf.mk
   HASHED_BOOT_DEVICE := 253:0
   BASIC_KERNEL_CMDLINE := console=ttyS0,115200n1 rootfstype=squashfs loglevel=8
-  KERNEL = kernel-bin | lzma | squashfs-hashed | fw-ar-ver | \
+  KERNEL = append-opteenode $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb | \
+	   kernel-bin | lzma | squashfs-hashed | fw-ar-ver | \
 	fit-sign lzma $$(KDIR)/image-sb-$$(firstword $$(DEVICE_DTS)).dtb
   KERNEL_INITRAMFS =
 endef
@@ -63,7 +64,8 @@
   ANTI_ROLLBACK_TABLE := $(TOPDIR)/../../fw_ar_table.xml
   AUTO_AR_CONF := $(TOPDIR)/../../auto_ar_conf.mk
   BASIC_KERNEL_CMDLINE := console=ttyS0,115200n1 rootfstype=squashfs,f2fs loglevel=8
-  KERNEL = kernel-bin | lzma | squashfs-hashed | fw-ar-ver | \
+  KERNEL = append-opteenode $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb | \
+	   kernel-bin | lzma | squashfs-hashed | fw-ar-ver | \
 	fit-sign lzma $$(KDIR)/image-sb-$$(firstword $$(DEVICE_DTS)).dtb
   KERNEL_INITRAMFS =
 endef