trunks, attestation, tpm_manager: update OWNERS

Removed usanghi, namnguen. Added apronin.
Added OWNERS for tpm_manager.

BUG=none
TEST=none

Change-Id: I485d996b33543d46f7fd52760c88c4a66e5fa421
Reviewed-on: https://chromium-review.googlesource.com/439626
Commit-Ready: Andrey Pronin <apronin@chromium.org>
Tested-by: Andrey Pronin <apronin@chromium.org>
Reviewed-by: Darren Krahn <dkrahn@chromium.org>
diff --git a/attestation/OWNERS b/attestation/OWNERS
index 699d270..c79caf8 100644
--- a/attestation/OWNERS
+++ b/attestation/OWNERS
@@ -1,3 +1,3 @@
 set noparent
+apronin@chromium.org
 dkrahn@chromium.org
-namnguyen@chromium.org
diff --git a/tpm_manager/OWNERS b/tpm_manager/OWNERS
new file mode 100644
index 0000000..c79caf8
--- /dev/null
+++ b/tpm_manager/OWNERS
@@ -0,0 +1,3 @@
+set noparent
+apronin@chromium.org
+dkrahn@chromium.org
diff --git a/trunks/OWNERS b/trunks/OWNERS
index 040e841..c79caf8 100644
--- a/trunks/OWNERS
+++ b/trunks/OWNERS
@@ -1,3 +1,3 @@
 set noparent
+apronin@chromium.org
 dkrahn@chromium.org
-usanghi@chromium.org