meta-ibm: Remove references to IBMBASE

IBMBASE is only used for pointing at licenses...point at the
licenses in oe-core in meta/files/common-licenses instead. to match the
defacto convention used in other oe layers like meta-openembedded.

Change-Id: Ic8305c920f4a1a37aaf92eef369c32764a0eeb25
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-witherspoon/recipes-phosphor/logging/mihawk-phosphor-logging-callouts-native.bb b/meta-witherspoon/recipes-phosphor/logging/mihawk-phosphor-logging-callouts-native.bb
index dcd902b..a52e937 100644
--- a/meta-witherspoon/recipes-phosphor/logging/mihawk-phosphor-logging-callouts-native.bb
+++ b/meta-witherspoon/recipes-phosphor/logging/mihawk-phosphor-logging-callouts-native.bb
@@ -1,7 +1,7 @@
 SUMMARY = "Mihawk inventory map for phosphor-ipmi-host"
 PR = "r1"
 LICENSE = "Apache-2.0"
-LIC_FILES_CHKSUM = "file://${IBMBASE}/COPYING.apache-2.0;md5=34400b68072d710fecd0a2940a0d1658"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
 
 inherit native
 inherit phosphor-logging