ARM: delete netx machine

After discussing with the subarch maintainers and Hilscher,
we concluded that the netx subarchitecture (Netx 100/500)
is no longer maintained or tested, and noone will miss it
if we delete it. So delete it.

There is a newer Netx 4000 architecture which we may see
included at some point, but this will be supported using
the standard multiplatform and devicetree mechanisms and is
easier to develop from scratch.

Cc: Michael Trensch <MTrensch@hilscher.com>
Acked-By: Robert Schwebel <r.schwebel@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/Kconfig

@@ -374,15 +374,6 @@ config ARCH_FOOTBRIDGE
 	  Support for systems based on the DC21285 companion chip
 	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 
-config ARCH_NETX
-	bool "Hilscher NetX based"
-	select ARM_VIC
-	select CLKSRC_MMIO
-	select CPU_ARM926T
-	select GENERIC_CLOCKEVENTS
-	help
-	  This enables support for systems based on the Hilscher NetX Soc
-
 config ARCH_IOP13XX
 	bool "IOP13xx-based"
 	depends on MMU
@@ -767,8 +758,6 @@ source "arch/arm/mach-mvebu/Kconfig"
 
 source "arch/arm/mach-mxs/Kconfig"
 
-source "arch/arm/mach-netx/Kconfig"
-
 source "arch/arm/mach-nomadik/Kconfig"
 
 source "arch/arm/mach-npcm/Kconfig"

arch/arm/Kconfig.debug

@@ -638,13 +638,6 @@ choice
 		  Say Y here if you want kernel low-level debugging support
 		  for Mediatek mt8135 based platforms on UART3.
 
-	config DEBUG_NETX_UART
-		bool "Kernel low-level debugging messages via NetX UART"
-		depends on ARCH_NETX
-		help
-		  Say Y here if you want kernel low-level debugging support
-		  on Hilscher NetX based platforms.
-
 	config DEBUG_NOMADIK_UART
 		bool "Kernel low-level debugging messages via NOMADIK UART"
 		depends on ARCH_NOMADIK

arch/arm/Makefile

@@ -191,7 +191,6 @@ machine-$(CONFIG_ARCH_MXC)		+= imx
 machine-$(CONFIG_ARCH_MEDIATEK)		+= mediatek
 machine-$(CONFIG_ARCH_MILBEAUT)		+= milbeaut
 machine-$(CONFIG_ARCH_MXS)		+= mxs
-machine-$(CONFIG_ARCH_NETX)		+= netx
 machine-$(CONFIG_ARCH_NOMADIK)		+= nomadik
 machine-$(CONFIG_ARCH_NPCM)		+= npcm
 machine-$(CONFIG_ARCH_NSPIRE)		+= nspire