sfc: Move Siena specific files

Files are only moved, no changes are made.

Signed-off-by: Martin Habets <habetsm.xilinx@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/siena/farch.c
similarity index 100%
rename from drivers/net/ethernet/sfc/farch.c
rename to drivers/net/ethernet/sfc/siena/farch.c

diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena/siena.c
similarity index 100%
rename from drivers/net/ethernet/sfc/siena.c
rename to drivers/net/ethernet/sfc/siena/siena.c

diff --git a/drivers/net/ethernet/sfc/siena_sriov.c b/drivers/net/ethernet/sfc/siena/siena_sriov.c
similarity index 100%
rename from drivers/net/ethernet/sfc/siena_sriov.c
rename to drivers/net/ethernet/sfc/siena/siena_sriov.c

diff --git a/drivers/net/ethernet/sfc/siena_sriov.h b/drivers/net/ethernet/sfc/siena/siena_sriov.h
similarity index 100%
rename from drivers/net/ethernet/sfc/siena_sriov.h
rename to drivers/net/ethernet/sfc/siena/siena_sriov.h