Merge "Clarify the <sys/ifunc.h> docs." into main am: 6a6f527dfc am: 6c29ab66c8 am: 708998128e am: c051c9376b

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2651113

Change-Id: I18a7c59b4ffb493da04866d64ddca0200386aef9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>