package/kvmtool: bump package version to 4d2c017f41
The current version dates back to 2017 and is lacking riscv support.
Bump the version to a more recent one (4d2c017f41) which supports riscv
and contains a large number of updates as well a CVE fixes. Since
kvmtool does not seems to have releases, just bump to the current git
HEAD.
Signed-off-by: Clément Léger <cleger@rivosinc.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>