[automerger skipped] logd: make drop_privs work if neither klogd or auditd are...

[automerger skipped] logd: make drop_privs work if neither klogd or auditd are used am: 8b637c88 -s ours am: 76609936 -s ours

am skip reason: Change-Id Ia51f078ad848535ce1ac29edd8a56a2b686a12cc with SHA-1 8b637c88 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/11959141

Change-Id: Ia34c515ed17ee2111ffca395ff6f83bba89f8f51