Update capp-ucode to latest master

Based on (IBM internal bug tracker) SW322717
  "SUE may be presented to OS in rare situations during a CAPI workload
   if EEH encountered"
diff --git a/openpower/package/capp-ucode/capp-ucode.mk b/openpower/package/capp-ucode/capp-ucode.mk
index ba5acd4..79fbbf6 100644
--- a/openpower/package/capp-ucode/capp-ucode.mk
+++ b/openpower/package/capp-ucode/capp-ucode.mk
@@ -3,7 +3,7 @@
 # capp-ucode.mk
 #
 ################################################################################
-CAPP_UCODE_VERSION ?= 105cb8f69edb7e76c4d153bf2e5c9718811a3114
+CAPP_UCODE_VERSION ?= 1bb7503078ed39b74a7b9c46925da75e547ceea6
 CAPP_UCODE_SITE ?= $(call github,open-power,capp-ucode,$(CAPP_UCODE_VERSION))
 CAPP_UCODE_LICENSE = Apache-2.0