openpower-libhei: srcrev bump c928f940b0..91d0b87213

Zane Shelley (1):
      Signature description updates for Explorer chip data

Change-Id: I12be8bb802141ce8537f93641d29c96d61cc60f4
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
diff --git a/meta-openpower/recipes-phosphor/logging/openpower-libhei-rev.inc b/meta-openpower/recipes-phosphor/logging/openpower-libhei-rev.inc
index feb8481..14a7ea7 100644
--- a/meta-openpower/recipes-phosphor/logging/openpower-libhei-rev.inc
+++ b/meta-openpower/recipes-phosphor/logging/openpower-libhei-rev.inc
@@ -2,5 +2,5 @@
 PV = "0.1+git${SRCPV}"
 
 SRC_URI = "git://github.com/openbmc/openpower-libhei"
-SRCREV = "c928f940b049f1efee32c0e47214943bedc03bc9"
+SRCREV = "91d0b872135c770c8d88fd9ff70b9f88060f5ec0"