Fix mtpd ARM sandbox policy.

BUG=chromium:230983
TEST=mtpd loads

Change-Id: Ie8529706965ffaa96566ab92c8839b20c8c0a664
Reviewed-on: https://gerrit.chromium.org/gerrit/48854
Tested-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Jorge Lucangeli Obes <jorgelo@chromium.org>
diff --git a/mtpd-seccomp-arm.policy b/mtpd-seccomp-arm.policy
index 2c642fd..8e85c46 100644
--- a/mtpd-seccomp-arm.policy
+++ b/mtpd-seccomp-arm.policy
@@ -60,7 +60,7 @@
 dup2: 1
 unlink: 1
 tgkill: 1
-getresgid: 1
-getresuid: 1
+getresgid32: 1
+getresuid32: 1
 signalfd4: 1
 ARM_set_tls: 1