Add GUID for vbmeta and oem partition.

Generated randomly using uuidgen.

Test: m dist
Bug: None
Change-Id: I3be5f05eda40dc63e954e9bfc369ff59ff466064
(cherry picked from commit 84b9607131ca364beaf93140c91f2d02b244a749)

README

diff --git a/README b/README
index 785dac8..32c56c4 100644
--- a/README
+++ b/README
@@ -94,8 +94,10 @@
                 brillo_boot
                 brillo_system
                 brillo_odm
+                brillo_oem
                 brillo_userdata
                 brillo_misc
+                brillo_vbmeta
                 brillo_vendor_specific
                 linux_fs
                 ms_basic_data

bpttool

diff --git a/bpttool b/bpttool
index 31cc508..09c39fb 100755
--- a/bpttool
+++ b/bpttool
@@ -71,8 +71,10 @@
     'brillo_boot': 'bb499290-b57e-49f6-bf41-190386693794',
     'brillo_system': '0f2778c4-5cc1-4300-8670-6c88b7e57ed6',
     'brillo_odm': 'e99d84d7-2c1b-44cf-8c58-effae2dc2558',
+    'brillo_oem': 'aa3434b2-ddc3-4065-8b1a-18e99ea15cb7',
     'brillo_userdata': '0bb7e6ed-4424-49c0-9372-7fbab465ab4c',
     'brillo_misc': '6b2378b0-0fbc-4aa9-a4f6-4d6e17281c47',
+    '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'