[PATCH 09/16] malloc: Only support zeroing and not arbitrary memset with mtag

[DJ Delorie]

Szabolcs Nagy <szabolcs.nagy@arm.com> writes:
> The memset api is suboptimal and does not provide much benefit. Memory
> tagging only needs a zeroing memset (and only for memory that's sized
> and aligned to multiples of the tag granule), so change the internal
> api and the target hooks accordingly.  This is to simplify the
> implementation of the target hook.

LGTM

Reviewed-by: DJ Delorie <dj@redhat.com>