[meta-oe][PATCH] vboxguestdrivers: Provide target kernel version

The Makefile uses `uname` to determine the kernel version. We must
override this with the actual target kernel version.

The kernel version might be empty during parsing (e.g. when using
linux-dummy), therefore `or ''` is needed.
---
 .../vboxguestdrivers/vboxguestdrivers_7.2.14.bb               | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta-oe/recipes-support/vboxguestdrivers/vboxguestdrivers_7.2.14.bb b/meta-oe/recipes-support/vboxguestdrivers/vboxguestdrivers_7.2.14.bb
index 18fda0393d..6a870c267c 100644
--- a/meta-oe/recipes-support/vboxguestdrivers/vboxguestdrivers_7.2.14.bb
+++ b/meta-oe/recipes-support/vboxguestdrivers/vboxguestdrivers_7.2.14.bb
@@ -14,7 +14,7 @@ DEPENDS = "virtual/kernel"
 # compiler-runtime deps needed to compile and link the userspace utility.
 DEPENDS += "virtual/compilerlibs virtual/libc"
 
-inherit module kernel-module-split
+inherit linux-kernel-base module kernel-module-split
 
 COMPATIBLE_MACHINE = "(qemux86|qemux86-64|qemuarm64)"
 
@@ -32,7 +32,7 @@ S:task-patch = "${UNPACKDIR}/${BP}"
 export VBOX_KBUILD_TARGET_ARCH = "${ARCH}"
 export VBOX_KBUILD_TARGET_ARCH:x86-64 = "amd64"
 
-EXTRA_OEMAKE += "KERN_DIR='${WORKDIR}/${KERNEL_VERSION}/build' KBUILD_VERBOSE=1 CC='${CC} ${DEBUG_PREFIX_MAP} -ffile-prefix-map=${STAGING_KERNEL_DIR}=${KERNEL_SRC_PATH} -ffile-prefix-map=${STAGING_KERNEL_BUILDDIR}=${KERNEL_SRC_PATH}'"
+EXTRA_OEMAKE += "KERN_DIR='${WORKDIR}/${KERNEL_VERSION}/build' KERN_MAJ='${@(get_kernelversion_file('${STAGING_KERNEL_BUILDDIR}') or '').split('.')[0]}' KBUILD_VERBOSE=1 CC='${CC} ${DEBUG_PREFIX_MAP} -ffile-prefix-map=${STAGING_KERNEL_DIR}=${KERNEL_SRC_PATH} -ffile-prefix-map=${STAGING_KERNEL_BUILDDIR}=${KERNEL_SRC_PATH}'"
 
 # otherwise 5.2.22 builds just vboxguest
 MAKE_TARGETS = "all"