kernel: Disabled kernel symlinks

In Yocto Kirkstone, a new way to create kernel symlinks was added.
Since we use a FAT partition for the Kernel, symlinks are not supported.
Disable the creation of symlinks.

recipes-kernel/linux/linux-guf.inc

@@ -14,10 +14,7 @@ EXTRA_OEMAKE += " 'DTC_FLAGS=-@' "
 # it generates the -- in the name
 KERNEL_ARTIFACT_NAME = "${PKGV}-${PKGR}-${MACHINE}${IMAGE_VERSION_SUFFIX}"
 
-do_install:append() {
-    # Remove the links, we have a fat partition as /boot
-    find "${D}/${KERNEL_IMAGEDEST}/" -type l -exec rm -v {} \;
-}
+KERNEL_IMAGETYPE_SYMLINK = "0"
 
 do_configure:prepend:fng() {
     sed -i -e 's|# CONFIG_LOGO_GF_FNGSYSTEM_CLUT224 is not set|# CONFIG_LOGO_GF_CLUT224 is not set|' ${WORKDIR}/defconfig