kexec-tools: Add license

Add GPL-2.0-only license and CPE id.

Signed-off-by: Jan Kardell <[email protected]>
Link: https://patchwork.ozlabs.org/project/openwrt/patch/[email protected]/
Signed-off-by: Hauke Mehrtens <[email protected]>

package/boot/kexec-tools/Makefile

@@ -15,6 +15,10 @@ PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@KERNEL/linux/utils/kernel/kexec
 PKG_HASH:=d2f0ef872f39e2fe4b1b01feb62b0001383207239b9f8041f98a95564161d053
 
+PKG_LICENSE:=GPL-2.0-only
+PKG_LICENSE_FILES:=COPYING
+PKG_CPE_ID:=cpe:/a:kernel:kexec-tools
+
 PKG_CONFIG_DEPENDS := CONFIG_KEXEC_ZLIB CONFIG_KEXEC_LZMA
 
 PKG_BUILD_FLAGS:=gc-sections