pcmanfm: add PCMANFM_CPE_ID_VENDOR

cpe:2.3:a:pcmanfm_project:pcmanfm is a valid CPE identifier for this
package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/pcmanfm/pcmanfm.mk

@@ -10,6 +10,7 @@ PCMANFM_SITE = http://sourceforge.net/projects/pcmanfm/files
 PCMANFM_DEPENDENCIES = libglib2 menu-cache libfm $(TARGET_NLS_DEPENDENCIES)
 PCMANFM_LICENSE = GPL-2.0+
 PCMANFM_LICENSE_FILES = COPYING
+PCMANFM_CPE_ID_VENDOR = pcmanfm_project
 PCMANFM_CONF_ENV = LIBS=$(TARGET_NLS_LIBS)
 
 ifeq ($(BR2_PACKAGE_LIBGTK3_X11),y)