chore(host_da): move host RME DA related functions

Move host RME DA related functions from host_rmi_da_flow.c
to host_da_helper.c.

Change-Id: Ib5c5ba3440ba1fa26b6f25a8bfab002183252627
Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>
3 files changed