Merge "Add __riscv_flush_icache() to <sys/cachectl.h>." into main am: a09f741c2a am: 953b78a72d am: 1cb2c81563 am: 7a62037690 am: 6efb89a064

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2655793

Change-Id: I4917bb4c2c8b139f6f99221e8b29305177b55054
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>