Merge "Don't duplicate uapi ioprio constants." into main am: 46c366b0ed am: de1aeee88d am: ab62e7d3b0

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2759694

Change-Id: If5ac3213e8b99a0141e023a30f27db89f623cb53
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>