[][Refactor mt7981 arm64 loadaddr to support ramdisk boot]

[Description]
Refactor mt7981 arm64 loadaddr to support ramdisk boot

[Release-log]
N/A

Change-Id: I2d24b917befa6cb3926e257afc8511fd8ce9befb
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5142287
diff --git a/target/linux/mediatek/image/mt7981.mk b/target/linux/mediatek/image/mt7981.mk
index 0a529a6..277b3d4 100755
--- a/target/linux/mediatek/image/mt7981.mk
+++ b/target/linux/mediatek/image/mt7981.mk
@@ -1,4 +1,4 @@
-KERNEL_LOADADDR := 0x44080000
+KERNEL_LOADADDR := 0x48080000
 
 define Device/mt7981b-spim-nor-rfb
   DEVICE_VENDOR := MediaTek