meta-phosphor: clear-once: set LICENSE field

Set LICENSE field explicitly.

Change-Id: I5a1a4e52397a07d684dccf8e4ba4b7f897819540
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/recipes-phosphor/clear-once/clear-once.bb b/recipes-phosphor/clear-once/clear-once.bb
index 79a7ecd..5d6d889 100644
--- a/recipes-phosphor/clear-once/clear-once.bb
+++ b/recipes-phosphor/clear-once/clear-once.bb
@@ -4,4 +4,6 @@
 RDEPENDS_${PN} = "${@d.getVar('PREFERRED_PROVIDER_u-boot-fw-utils', True) or 'u-boot-fw-utils'}"
 
 inherit obmc-phosphor-systemd
-inherit obmc-phosphor-license
+
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${PHOSPHORBASE}/COPYING.apache-2.0;md5=34400b68072d710fecd0a2940a0d1658"