Build: Add IAR support for AN547 and AN552 (M55)

This patch adds support for AN547 and AN552 with IAR (>= 9.20.x)

Signed-off-by: TTornblom <thomas.tornblom@iar.com>
Change-Id: I0732aafdb72b9f205f787cf9183ca29f13fdca8e
11 files changed