ima-evm-keys: don't use lnr

lnr is a script in oe-core that creates relative symlinks, with the same
behaviour as `ln --relative --symlink`.  It was added back in 2014[1] as
not all of the supported host distributions at the time shipped
coreutils 8.16, the first release with --relative.

However the oldest coreutils release in the supported distributions is
now 8.22 in CentOS 7, so lnr can be deprecated and users switched to ln.

Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-integrity/recipes-security/ima-evm-keys/ima-evm-keys_1.0.bb

@@ -11,7 +11,7 @@ do_install () {
     if [ -e "${IMA_EVM_X509}" ]; then
         install -d ${D}/${sysconfdir}/keys
         install "${IMA_EVM_X509}" ${D}${sysconfdir}/keys/x509_evm.der
-        lnr ${D}${sysconfdir}/keys/x509_evm.der ${D}${sysconfdir}/keys/x509_ima.der
+        ln -rs ${D}${sysconfdir}/keys/x509_evm.der ${D}${sysconfdir}/keys/x509_ima.der
     fi
 }
 do_install[file-checksums] += "${@'${IMA_EVM_X509}:%s' % os.path.exists('${IMA_EVM_X509}')}"