clang-format: Update to match docs repo

Update the .clang-format file.
Now includes header sorting and updating PointerAlignment.

Change-Id: I7119c12f1cc0a461cb7e4576dff6a02dcc95cbc4
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/image_verify.hpp b/image_verify.hpp
index ac601a2..768182e 100644
--- a/image_verify.hpp
+++ b/image_verify.hpp
@@ -1,12 +1,14 @@
 #pragma once
 #include "utils.hpp"
-#include <openssl/rsa.h>
+
 #include <openssl/evp.h>
 #include <openssl/pem.h>
+#include <openssl/rsa.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
 #include <experimental/filesystem>
 #include <set>
-#include <unistd.h>
-#include <sys/mman.h>
 
 namespace openpower
 {