spi: use memcpy() and not _memcpy()
spi: use memcpy() and not _memcpy()

We renamed it to match the standard name.

Signed-off-by: Sean Cross <dd28e116ed3e781f3ae781acae9fb18383f35c2f@kosagi.com>

urjaman/fernly,xobs/fernly,urjaman/fernly,xobs/fernly,mandl/fernly,urjaman/fernly,pfalcon/fernly,mandl/fernly,pfalcon/fernly,mandl/fernly