meta-google: conf2struct: Package LICENSE is BSD-2-Clause

SPDX doesn't identify an unadorned "BSD" license like the recipe
previously claimed. Define the license as BSD-2-Clause in accordance
with the COPYING file:

https://github.com/yrutschle/conf2struct/blob/6bc9eed1eb50175e5fda791f27d85e72f5a6ac78/COPYING

Change-Id: I878d8dab97980aa1547f630bd55eb5f81f72b625
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/meta-google/recipes-extended/libconfig/conf2struct-native_git.bb b/meta-google/recipes-extended/libconfig/conf2struct-native_git.bb
index 56fe93a..974bf3e 100644
--- a/meta-google/recipes-extended/libconfig/conf2struct-native_git.bb
+++ b/meta-google/recipes-extended/libconfig/conf2struct-native_git.bb
@@ -1,4 +1,4 @@
-LICENSE = "BSD"
+LICENSE = "BSD-2-Clause"
 LIC_FILES_CHKSUM = "file://COPYING;md5=667d4ad55f5fbf4c3e853e8acd0f74de"
 
 PV = "0.1+git${SRCPV}"