boot/at91bootstrap3: add CPE variables

cpe:2.3:a:linux_sam:at91bootstrap is a valid CPE identifier for this
package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Alinux_sam%3Aat91bootstrap

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

boot/at91bootstrap3/at91bootstrap3.mk

@@ -24,6 +24,9 @@ ifeq ($(BR2_TARGET_AT91BOOTSTRAP3_LATEST_VERSION),y)
 AT91BOOTSTRAP3_LICENSE_FILES = main.c
 endif
 
+AT91BOOTSTRAP3_CPE_ID_VENDOR = linux4sam
+AT91BOOTSTRAP3_CPE_ID_PRODUCT = at91bootstrap
+
 AT91BOOTSTRAP3_INSTALL_IMAGES = YES
 AT91BOOTSTRAP3_INSTALL_TARGET = NO