[PATCH v8 4/4] Documentation: document the preferred tag checking mode feature

[Catalin Marinas]

On Wed, Jun 30, 2021 at 04:15:09PM -0700, Peter Collingbourne wrote:
> Document the functionality added in the previous patches.
> 
> Link: https://linux-review.googlesource.com/id/I48217cc3e8b8da33abc08cbaddc11cf4360a1b86
> Signed-off-by: Peter Collingbourne <pcc at google.com>

Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>