clang-format issue fix for openpower repo

Requires clang version 10.

Signed-off-by: Priyanga Ramasamy <priyanga24@in.ibm.com>
Change-Id: I9ca52db7e8f1ea65e34ef7e25f059a133865e7da
diff --git a/.clang-format b/.clang-format
index ea71ad6..f36605c 100644
--- a/.clang-format
+++ b/.clang-format
@@ -21,6 +21,7 @@
 BinPackArguments: true
 BinPackParameters: true
 BraceWrapping:
+  AfterCaseLabel: true
   AfterClass:      true
   AfterControlStatement: true
   AfterEnum:       true