imgtec/pistachio: Bring uart driver to modern standards

The console interface changed in upstream, and the
driver didn't reflect that yet.
This wasn't obvious because the driver wasn't compiled
at all.

Change-Id: Id18391e62e7ebd8f5fc929838ce27bf414e364f9
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: http://review.coreboot.org/9165
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
diff --git a/src/soc/imgtec/pistachio/Makefile.inc b/src/soc/imgtec/pistachio/Makefile.inc
index e695abd..b91bb1b5 100644
--- a/src/soc/imgtec/pistachio/Makefile.inc
+++ b/src/soc/imgtec/pistachio/Makefile.inc
@@ -24,7 +24,7 @@
 romstage-y += spi.c
 ramstage-y += spi.c
 
-ifeq ($(CONFIG_CONSOLE_SERIAL_UART),y)
+ifeq ($(CONFIG_DRIVERS_UART),y)
 bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += uart.c
 romstage-y += uart.c
 ramstage-y += uart.c