Add EFI System partition type

BUG: 32915642

Change-Id: I278c2fa5055fc18aef87cc0c00e031428997b8b8
Tracked-On: https://jira01.devtools.intel.com/browse/BP-570
Signed-off-by: Ragha Khandenahally <Ragha.Khandenahally@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
diff --git a/bpttool b/bpttool
index 09c39fb..b479374 100755
--- a/bpttool
+++ b/bpttool
@@ -77,7 +77,8 @@
     'brillo_vbmeta': 'b598858a-5fe3-418e-b8c4-824b41f4adfc',
     'brillo_vendor_specific': '314f99d5-b2bf-4883-8d03-e2f2ce507d6a',
     'linux_fs': '0fc63daf-8483-4772-8e79-3d69d8477de4',
-    'ms_basic_data': 'ebd0a0a2-b9e5-4433-87c0-68b6b72699c7'
+    'ms_basic_data': 'ebd0a0a2-b9e5-4433-87c0-68b6b72699c7',
+    'efi_system': 'c12a7328-f81f-11d2-ba4b-00a0c93ec93b'
 }