uart: Redefine Kconfig options

Option DRIVERS_UART builds with support for UART hardware.
Option CONSOLE_SERIAL enables the console output for UART.

Those x86 boards that do not have serial port on SuperIO should select
NO_UART_ON_SUPERIO to disable 8250 UART for the default configuration.

Removes:
  CONSOLE_SERIAL_UART
  HAVE_UART_IO_MAPPED
  HAVE_UART_MEMORY_MAPPED

Renames:
  CONSOLE_SERIAL8250     ->  DRIVERS_UART_8250IO
  CONSOLE_SERIAL8250MEM  ->  DRIVERS_UART_8250MEM

Change-Id: Id3afa05f85c0d6849746886db8b6c2ed6c846b61
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5311
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

src/cpu/allwinner/a10/Kconfig

@@ -76,7 +76,7 @@ config SYS_SDRAM_BASE
 choice CONSOLE_SERIAL_UART_CHOICES
 	prompt "Serial Console UART"
 	default CONSOLE_SERIAL_UART0
-	depends on CONSOLE_SERIAL_UART
+	depends on CONSOLE_SERIAL
 
 config CONSOLE_SERIAL_UART0
 	bool "UART0"

src/cpu/allwinner/a10/Makefile.inc

@@ -4,8 +4,6 @@ bootblock-y	+= gpio.c
 bootblock-y	+= pinmux.c
 bootblock-y	+= raminit.c
 bootblock-y	+= timer.c
-bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += uart.c
-bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += uart_console.c
 
 romstage-y	+= bootblock_media.c
 romstage-y	+= cbmem.c
@@ -13,8 +11,6 @@ romstage-y	+= clock.c
 romstage-y	+= pinmux.c
 romstage-y	+= timer.c
 romstage-y	+= twi.c
-romstage-y	+= uart.c
-romstage-y	+= uart_console.c
 
 ramstage-y	+= bootblock_media.c
 ramstage-y	+= cbmem.c
@@ -23,8 +19,12 @@ ramstage-y	+= cpu.c
 ramstage-y	+= monotonic_timer.c
 ramstage-y	+= timer.c
 ramstage-y	+= twi.c
-ramstage-y	+= uart.c
-ramstage-y	+= uart_console.c
+
+ifeq ($(CONFIG_DRIVERS_UART),y)
+bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += uart.c uart_console.c
+romstage-y	+= uart.c uart_console.c
+ramstage-y	+= uart.c uart_console.c
+endif
 
 real-target: $(obj)/BOOT0