net/sfc/base: improve MCDI interface header inclusion

Include efx_mcdi.h from main internal header efx_impl.h directly
instead of indirect inclusion via family-specific header.
It avoids duplication and fixes Medford and Medford2 cases where
the header inclusion is lost.
Correctness is still guaranteed by checks in efx_check.h which
require EFSYS_OPT_MCDI for corresponding families and do not
allow to enable the option if no family requires it.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

drivers/net/sfc/base/efx_impl.h

@@ -10,6 +10,9 @@
 #include "efx.h"
 #include "efx_regs.h"
 #include "efx_regs_ef10.h"
+#if EFSYS_OPT_MCDI
+#include "efx_mcdi.h"
+#endif	/* EFSYS_OPT_MCDI */
 
 /* FIXME: Add definition for driver generated software events */
 #ifndef	ESE_DZ_EV_CODE_DRV_GEN_EV

drivers/net/sfc/base/hunt_impl.h

@@ -10,7 +10,6 @@
 #include "efx.h"
 #include "efx_regs.h"
 #include "efx_regs_ef10.h"
-#include "efx_mcdi.h"
 
 #ifdef	__cplusplus
 extern "C" {

drivers/net/sfc/base/siena_impl.h

@@ -9,7 +9,6 @@
 
 #include "efx.h"
 #include "efx_regs.h"
-#include "efx_mcdi.h"
 #include "siena_flash.h"
 
 #ifdef	__cplusplus