meta-phosphor: skeleton-rev.bbclass: set LICENSE field

Set LICENSE field explicitly.

Change-Id: I1dfadb5ad6f2b16e0e04d0bee96c9da7f58cd0ef
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/classes/skeleton-rev.bbclass b/classes/skeleton-rev.bbclass
index 0739177..2eae599 100644
--- a/classes/skeleton-rev.bbclass
+++ b/classes/skeleton-rev.bbclass
@@ -1,2 +1,4 @@
 SRCREV ?= "a9427c85f386cdd452a33911893b3372f0068f3c"
 SKELETON_URI ?= "git://github.com/openbmc/skeleton"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${WORKDIR}/git/LICENSE;md5=e3fc50a88d0a364313df4b21ef20c29e"