meta-ibm: romulus: gpio: id-button: set LICENSE field

Set LICENSE field explicitly.

Change-Id: I3b643e19f3efe71cd8d377a5a721f145ca8a2208
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/meta-romulus/recipes-phosphor/gpio/id-button.bb b/meta-romulus/recipes-phosphor/gpio/id-button.bb
index 7267ee3..90513b4 100644
--- a/meta-romulus/recipes-phosphor/gpio/id-button.bb
+++ b/meta-romulus/recipes-phosphor/gpio/id-button.bb
@@ -1,8 +1,9 @@
 SUMMARY = "Romulus ID Button pressed application"
 PR = "r1"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${IBMBASE}/COPYING.apache-2.0;md5=34400b68072d710fecd0a2940a0d1658"
 
 inherit obmc-phosphor-systemd
-inherit obmc-phosphor-license
 
 DEPENDS += "virtual/obmc-gpio-monitor"
 RDEPENDS_${PN} += "virtual/obmc-gpio-monitor"