Revert SBE pointer to fix MPIPL

Reverts the previous SBE pointer update in
order to fix a failure in enter_mpipl

Signed-off-by: Nick Bofferding <opensource@bofferding.net>
diff --git a/openpower/package/sbe-p10/Config.in b/openpower/package/sbe-p10/Config.in
index 0690f36..ac31167 100644
--- a/openpower/package/sbe-p10/Config.in
+++ b/openpower/package/sbe-p10/Config.in
@@ -26,7 +26,7 @@
 
 config BR2_SBE_P10_VERSION
 	string
-	default "8bc02d0fef95abb88c21385ee718091b7f29a84c" if BR2_SBE_P10_LATEST_VERSION
+	default "219bc781e7e687faf55d8679205f87e01ee87ee3" if BR2_SBE_P10_LATEST_VERSION
 	default BR2_SBE_P10_CUSTOM_VERSION_VALUE \
 		if BR2_SBE_P10_CUSTOM_VERSION