sfc: Make board information explicitly Falcon-specific

Rename struct efx_board to struct falcon_board.

Introduce and use inline function to look up board info from struct
efx_nic, in preparation for moving it.

Move board init and fini calls into NIC probe and remove functions.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/sfc/efx.c
Simple merge

diff --cc drivers/net/sfc/ethtool.c
Simple merge

diff --cc drivers/net/sfc/falcon.c
Simple merge

diff --cc drivers/net/sfc/falcon.h
Simple merge

diff --cc drivers/net/sfc/falcon_boards.c
Simple merge

diff --cc drivers/net/sfc/net_driver.h
Simple merge

diff --cc drivers/net/sfc/qt202x_phy.c
Simple merge

diff --cc drivers/net/sfc/tenxpress.c
Simple merge