serial: remove cris/etrax uart drivers

ETRAX FS UART

Required properties:

- compatible : "axis,etraxfs-uart"

- reg: offset and length of the register set for the device.

- interrupts: device interrupt

Optional properties:

- {dtr,dsr,rng,dcd}-gpios: specify a GPIO for DTR/DSR/RI/DCD

  line respectively.

Example:

serial@b00260000 {

	compatible = "axis,etraxfs-uart";

	reg = <0xb0026000 0x1000>;

	interrupts = <68>;

	dtr-gpios = <&sysgpio 0 GPIO_ACTIVE_LOW>;

	dsr-gpios = <&sysgpio 1 GPIO_ACTIVE_LOW>;

	rng-gpios = <&sysgpio 2 GPIO_ACTIVE_LOW>;

	dcd-gpios = <&sysgpio 3 GPIO_ACTIVE_LOW>;

};

	depends on SERIAL_VT8500=y

	select SERIAL_CORE_CONSOLE

config SERIAL_ETRAXFS

	bool "ETRAX FS serial port support"

	depends on ETRAX_ARCH_V32 && OF

	select SERIAL_CORE

	select SERIAL_MCTRL_GPIO if GPIOLIB

config SERIAL_ETRAXFS_CONSOLE

	bool "ETRAX FS serial console support"

	depends on SERIAL_ETRAXFS

	select SERIAL_CORE_CONSOLE

config SERIAL_NETX

	tristate "NetX serial port support"

	depends on ARCH_NETX

obj-$(CONFIG_SERIAL_MPSC) += mpsc.o

obj-$(CONFIG_SERIAL_MESON) += meson_uart.o

obj-$(CONFIG_SERIAL_SB1250_DUART) += sb1250-duart.o

obj-$(CONFIG_ETRAX_SERIAL) += crisv10.o

obj-$(CONFIG_SERIAL_ETRAXFS) += etraxfs-uart.o

obj-$(CONFIG_SERIAL_SCCNXP) += sccnxp.o

obj-$(CONFIG_SERIAL_SC16IS7XX_CORE) += sc16is7xx.o

obj-$(CONFIG_SERIAL_JSM) += jsm/