sfc: Rename Falcon-architecture register definitions

The EF10 architecture has a very different register layout from
previous controllers, so we'll use separate files for the two sets of
register definitions.  Use 'farch' as an abbreviation for
Falcon-architecture.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

drivers/net/ethernet/sfc/siena.c

@@ -19,7 +19,7 @@
 #include "efx.h"
 #include "nic.h"
 #include "spi.h"
-#include "regs.h"
+#include "farch_regs.h"
 #include "io.h"
 #include "phy.h"
 #include "workarounds.h"