kpatch: fix QA build errors for nativesdk

This patch fixes next QA Issue:
nativesdk-kpatch: Files/directories were installed but not shipped in any package:
  /etc
  /etc/init
  /etc/init/kpatch.conf

Signed-off-by: Ruslan Bilovol <rbilovol@cisco.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-kernel/kpatch/kpatch.inc

@@ -15,6 +15,7 @@ EXTRA_OEMAKE = " \
 	LIBDIR=${D}${libdir} \
 	MANDIR=${D}${mandir}/man1 \
 	SYSTEMDDIR=${D}${systemd_system_unitdir} \
+	UPSTARTDIR=${D}${sysconfdir}/init \
 	DESTDIR=${D} \
 	BUILDMOD=no \
 	CC='${CC}' \