meta-ingrasys: Remove references to INGRASYSBASE

INGRASYSBASE 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-ingrasys rev: fcd2b2998a76f00307bb2ff821efa8ff8ef87c68)

Change-Id: I76d73574778db36a649f20ccc0a5149f616743af
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control.bb b/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control.bb
index 164a9e7..dd6d6ee 100644
--- a/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control.bb
+++ b/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/avsbus-control.bb
@@ -2,7 +2,7 @@
 DESCRIPTION = "Voltage regulator module (VRM) AVSBus control for Zaius"
 PR = "r0"
 LICENSE = "Apache-2.0"
-LIC_FILES_CHKSUM = "file://${INGRASYSBASE}/COPYING.apache-2.0;md5=34400b68072d710fecd0a2940a0d1658"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
 
 inherit obmc-phosphor-systemd