op-build update 5-2-2019

Changes Included for package hostboot, branch master:
a6b70d6 - Glenn Miles - 2019-05-01 - Add new 'expupd' module

Signed-off-by: hostboot <hostboot@us.ibm.com>
diff --git a/openpower/package/hostboot/Config.in b/openpower/package/hostboot/Config.in
index 1fe3f01..dc60485 100644
--- a/openpower/package/hostboot/Config.in
+++ b/openpower/package/hostboot/Config.in
@@ -25,7 +25,7 @@
 
 config BR2_HOSTBOOT_VERSION
 	string
-	default "5f68c549965e0cebcb557026938ba57ff0aa8ba8" if BR2_HOSTBOOT_LATEST_VERSION
+	default "a6b70d6c06d2b261bbb0a00522088fd5c0d8f395" if BR2_HOSTBOOT_LATEST_VERSION
 	default BR2_HOSTBOOT_CUSTOM_VERSION_VALUE \
 		if BR2_HOSTBOOT_CUSTOM_VERSION