ca-certificates: add missing license information

The package has no licence information. So let's fix it.

Signed-off-by: Florian Eckert <[email protected]>

package/system/ca-certificates/Makefile

@@ -11,6 +11,9 @@ PKG_VERSION:=20240203
 PKG_RELEASE:=1
 PKG_MAINTAINER:=
 
+PKG_LICENSE:=GPL-2.0-or-later MPL-2.0
+PKG_LICENSE_FILES:=debian/copyright
+
 PKG_SOURCE:=$(PKG_NAME)_$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@DEBIAN/pool/main/c/ca-certificates
 PKG_HASH:=3286d3fc42c4d11b7086711a85f865b44065ce05cf1fb5376b2abed07622a9c6