Merge pull request #4224 from opalci/skiboot-v6.7.3

skiboot v6.7.3
diff --git a/openpower/package/skiboot/Config.in b/openpower/package/skiboot/Config.in
index 25ecb9c..811a113 100644
--- a/openpower/package/skiboot/Config.in
+++ b/openpower/package/skiboot/Config.in
@@ -31,7 +31,7 @@
 
 config BR2_SKIBOOT_VERSION
 	string
-	default "v6.7.2" if BR2_SKIBOOT_LATEST_VERSION
+	default "v6.7.3" if BR2_SKIBOOT_LATEST_VERSION
 	default BR2_SKIBOOT_CUSTOM_VERSION_VALUE \
 		if BR2_SKIBOOT_CUSTOM_VERSION