meta-phosphor: Remove references to PHOSPHORBASE

PHOSPHORBASE 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.

(From meta-phosphor rev: a1cee09419cb1467c3d2b7bf996b40089f0d06f4)

Change-Id: If136d24638a8022671988cf0a01620e7fffc545f
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/recipes-phosphor/logging/phosphor-logging-callouts-mrw-native.bb b/meta-phosphor/recipes-phosphor/logging/phosphor-logging-callouts-mrw-native.bb
index be53df5..9515c68 100644
--- a/meta-phosphor/recipes-phosphor/logging/phosphor-logging-callouts-mrw-native.bb
+++ b/meta-phosphor/recipes-phosphor/logging/phosphor-logging-callouts-mrw-native.bb
@@ -1,7 +1,7 @@
 SUMMARY = "Generated callout information for phosphor-logging"
 PR = "r1"
 LICENSE = "Apache-2.0"
-LIC_FILES_CHKSUM = "file://${PHOSPHORBASE}/COPYING.apache-2.0;md5=34400b68072d710fecd0a2940a0d1658"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
 
 inherit native
 inherit phosphor-logging