package/linuxptp: add LINUXPTP_CPE_ID_VENDOR

cpe:2.3:a:linuxptp_project:linuxptp is a valid CPE identifier for this
package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Alinuxptp_project%3Alinuxptp

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 9d3dd830585610b1253ad66f921fab0ad059fda4)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/linuxptp/linuxptp.mk

@@ -9,6 +9,7 @@ LINUXPTP_SOURCE = linuxptp-$(LINUXPTP_VERSION).tgz
 LINUXPTP_SITE = http://downloads.sourceforge.net/linuxptp
 LINUXPTP_LICENSE = GPL-2.0+
 LINUXPTP_LICENSE_FILES = COPYING
+LINUXPTP_CPE_ID_VENDOR = linuxptp_project
 
 LINUXPTP_MAKE_ENV = \
 	$(TARGET_MAKE_ENV) \