op-build update 8-25-2020

Changes Included for package hostboot, branch master:
8921997 - Stephen Glancy - 2020-08-24 - Adds generic LRDIMM VREF calibration algorithm
df34672 - Mark Pizzutillo - 2020-08-24 - Add RCD timing attributes for 4U
b66e5ba - Stephen Glancy - 2020-08-24 - Adds explorer PHY init tool
0c2a399 - Matt Derksen - 2020-08-24 - Wait appropriate time after enabling notifications in nvdimmArm()

Signed-off-by: hostboot <hostboot@us.ibm.com>
diff --git a/openpower/package/hostboot/Config.in b/openpower/package/hostboot/Config.in
index 4c8ac0f..446bd97 100644
--- a/openpower/package/hostboot/Config.in
+++ b/openpower/package/hostboot/Config.in
@@ -25,7 +25,7 @@
 
 config BR2_HOSTBOOT_VERSION
 	string
-	default "4f09326634c2d6b89090df68d9c24c1f1b3f3521" if BR2_HOSTBOOT_LATEST_VERSION
+	default "89219972ac333bf6913f0be0819c7c15e302ba9b" if BR2_HOSTBOOT_LATEST_VERSION
 	default BR2_HOSTBOOT_CUSTOM_VERSION_VALUE \
 		if BR2_HOSTBOOT_CUSTOM_VERSION