[PATCH v3 1/2] malloc: Refactor malloc API into a separate header

[Wilco Dijkstra]

Hi Yury,

> This commit moves declarations for various malloc functions from
> the malloc.c file to a separate header that can be used to include
> these declarations in other source files.
> 
> No functional change intended.

LGTM.

Reviewed-by: Wilco Dijkstra  <Wilco.Dijkstra@arm.com>

Cheers,
Wilco