serial: remove tile uart driver

The tile architecture is getting removed, and this driver is
useless without it.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/tty/serial/Kconfig

@@ -1330,15 +1330,6 @@ config SERIAL_EFM32_UART_CONSOLE
 	depends on SERIAL_EFM32_UART=y
 	select SERIAL_CORE_CONSOLE
 
-config SERIAL_TILEGX
-	tristate "TILE-Gx on-chip serial port support"
-	depends on TILEGX
-	select TILE_GXIO_UART
-	select SERIAL_CORE
-	---help---
-	  This device provides access to the on-chip UARTs on the TILE-Gx
-	  processor.
-
 config SERIAL_ARC
 	tristate "ARC UART driver support"
 	select SERIAL_CORE

drivers/tty/serial/Makefile

@@ -63,7 +63,6 @@ obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
 obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o
 obj-$(CONFIG_SERIAL_ALTERA_UART) += altera_uart.o
 obj-$(CONFIG_SERIAL_ST_ASC) += st-asc.o
-obj-$(CONFIG_SERIAL_TILEGX) += tilegx.o
 obj-$(CONFIG_SERIAL_QE) += ucc_uart.o
 obj-$(CONFIG_SERIAL_TIMBERDALE)	+= timbuart.o
 obj-$(CONFIG_SERIAL_GRLIB_GAISLER_APBUART) += apbuart.o