package/tailscale: add CPE_ID_VENDOR

This gives a proper cpe-id string to the tailscale buildroot package

Signed-off-by: Titouan Christophe <titouan.christophe@mind.be>
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit fd04cba20daa5377179c1de841f4f9a1facfc448)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>

package/tailscale/tailscale.mk

@@ -9,6 +9,7 @@ TAILSCALE_SITE = $(call github,tailscale,tailscale,v$(TAILSCALE_VERSION))
 TAILSCALE_LICENSE = BSD-3-Clause
 TAILSCALE_LICENSE_FILES = LICENSE
 TAILSCALE_GOMOD = tailscale.com
+TAILSCALE_CPE_ID_VENDOR = tailscale
 TAILSCALE_BUILD_TARGETS = cmd/tailscale cmd/tailscaled
 TAILSCALE_INSTALL_BINS = tailscale tailscaled
 TAILSCALE_LDFLAGS = \