The memory allocation for socketpairs is not conformant to the new
MEM_POOL_ADD_SIZE_ mechanism for allocating heap memory.
Specifically CONFIG_NET_SOCKETPAIR_HEAP can not be selected unless
the user has specified CONFIG_HEAP_MEM_POOL_SIZE. We should be
using MEM_POOL_ADD_SIZE_ to add to the heap if the user wants to
use it for socketpair allocation.
Additionally increase the size of pre-allocated sockets to 8 from 1
to support larger devices by default, taking into consideration the
required socketpairs and buffer sizes when using
WIFI_NM_WPA_SUPPLICANT.
Signed-off-by: Bjarki Arge Andreasen <bjarki.andreasen@nordicsemi.no>
280fbec58e