Commit 1e969d01a636 ("fix(build): use assignment instead of memcpy to
avoid a GCC 11 bug") introduced a shared_mem_ap_to_scp variable to
mitigate a compiler issue but mistakenly used that variable in the scpi
receive path, when it should obviously use the SCP to AP address
instead.
Introduce a similar shared_mem_scp_to_ap variable and use it instead.
Change-Id: Ib66ac4c791dc505a94f3d6c75b6196d246785360
Signed-off-by: Paul Kocialkowski <paulk@sys-base.io>
221cf4b901