net: remove smc911x driver

This driver was used on Arm and SH machines until 2009, when the
last platforms moved to the smsc911x driver for the same hardware.

Time to retire this version.

Link: https://lore.kernel.org/netdev/1232010482-3744-1-git-send-email-steve.glendinning@smsc.com/Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20221017121900.3520108-1-arnd@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/smsc/Kconfig

@@ -75,20 +75,6 @@ config EPIC100
 	  More specific information and updates are available from
 	  <http://www.scyld.com/network/epic100.html>.
 
-config SMC911X
-	tristate "SMSC LAN911[5678] support"
-	select CRC32
-	select MII
-	depends on (ARM || SUPERH || COMPILE_TEST)
-	help
-	  This is a driver for SMSC's LAN911x series of Ethernet chipsets
-	  including the new LAN9115, LAN9116, LAN9117, and LAN9118.
-	  Say Y here if you want it compiled into the kernel.
-
-	  This driver is also available as a module. The module will be
-	  called smc911x.  If you want to compile it as a module, say M
-	  here and read <file:Documentation/kbuild/modules.rst>
-
 config SMSC911X
 	tristate "SMSC LAN911x/LAN921x families embedded ethernet support"
 	depends on HAS_IOMEM

drivers/net/ethernet/smsc/Makefile

@@ -8,5 +8,4 @@ obj-$(CONFIG_SMC91X) += smc91x.o
 obj-$(CONFIG_PCMCIA_SMC91C92) += smc91c92_cs.o
 obj-$(CONFIG_EPIC100) += epic100.o
 obj-$(CONFIG_SMSC9420) += smsc9420.o
-obj-$(CONFIG_SMC911X) += smc911x.o
 obj-$(CONFIG_SMSC911X) += smsc911x.o

include/linux/smc911x.h

-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __SMC911X_H__
-#define __SMC911X_H__
-
-#define SMC911X_USE_16BIT (1 << 0)
-#define SMC911X_USE_32BIT (1 << 1)
-
-struct smc911x_platdata {
-	unsigned long flags;
-	unsigned long irq_flags; /* IRQF_... */
-	int irq_polarity;
-};
-
-#endif /* __SMC911X_H__ */