screenrecord: Fix mediacodec selinux and seccomp policy denials am: 6d532aebe8 am: 440776f4b4 am: 006b0d67b5

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/1551454

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Iff490eeecabca2d26fcf082f24bc732661b18aee