net: atm: remove support for Madge Horizon ATM devices

This driver received nothing but automated fixes since git era begun.
Since it's using virt_to_bus it's unlikely to be used on any modern
platform.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/mips/configs/gpr_defconfig

@@ -181,7 +181,6 @@ CONFIG_ATM_ENI=m
 CONFIG_ATM_ZATM=m
 CONFIG_ATM_NICSTAR=m
 CONFIG_ATM_IDT77252=m
-CONFIG_ATM_HORIZON=m
 CONFIG_ATM_IA=m
 CONFIG_ATM_FORE200E=m
 CONFIG_ATM_HE=m

arch/mips/configs/mtx1_defconfig

@@ -258,7 +258,6 @@ CONFIG_ATM_ENI=m
 CONFIG_ATM_ZATM=m
 CONFIG_ATM_NICSTAR=m
 CONFIG_ATM_IDT77252=m
-CONFIG_ATM_HORIZON=m
 CONFIG_ATM_IA=m
 CONFIG_ATM_FORE200E=m
 CONFIG_ATM_HE=m

drivers/atm/Kconfig

@@ -234,30 +234,6 @@ config ATM_IDT77252_USE_SUNI
 	depends on ATM_IDT77252
 	default y
 
-config ATM_HORIZON
-	tristate "Madge Horizon [Ultra] (Collage PCI 25 and Collage PCI 155 Client)"
-	depends on PCI && VIRT_TO_BUS
-	help
-	  This is a driver for the Horizon chipset ATM adapter cards once
-	  produced by Madge Networks Ltd. Say Y (or M to compile as a module
-	  named horizon) here if you have one of these cards.
-
-config ATM_HORIZON_DEBUG
-	bool "Enable debugging messages"
-	depends on ATM_HORIZON
-	help
-	  Somewhat useful debugging messages are available. The choice of
-	  messages is controlled by a bitmap.  This may be specified as a
-	  module argument (kernel command line argument as well?), changed
-	  dynamically using an ioctl (not yet) or changed by sending the
-	  string "Dxxxx" to VCI 1023 (where x is a hex digit).  See the file
-	  <file:drivers/atm/horizon.h> for the meanings of the bits in the
-	  mask.
-
-	  When active, these messages can have a significant impact on the
-	  speed of the driver, and the size of your syslog files! When
-	  inactive, they will have only a modest impact on performance.
-
 config ATM_IA
 	tristate "Interphase ATM PCI x575/x525/x531"
 	depends on PCI

drivers/atm/Makefile

@@ -7,7 +7,6 @@ fore_200e-y	:= fore200e.o
 
 obj-$(CONFIG_ATM_ZATM)		+= zatm.o uPD98402.o
 obj-$(CONFIG_ATM_NICSTAR)	+= nicstar.o
-obj-$(CONFIG_ATM_HORIZON)	+= horizon.o
 obj-$(CONFIG_ATM_IA)		+= iphase.o suni.o
 obj-$(CONFIG_ATM_FORE200E)	+= fore_200e.o
 obj-$(CONFIG_ATM_ENI)		+= eni.o suni.o