nios2: Move serial drivers to individual files in  drivers/serial

   The standard Altera UART & JTAG UART as well as the OpenCores
   YANU driver are now in individual files in drivers/serial
   rather than a single file uner cpu/nios2.

Signed-off-by: Scott McNutt <smcnutt@psyent.com>
diff --git a/include/configs/EP1C20.h b/include/configs/EP1C20.h
index 61d8e20..dc82e54 100644
--- a/include/configs/EP1C20.h
+++ b/include/configs/EP1C20.h
@@ -94,7 +94,8 @@
 /*------------------------------------------------------------------------
  * CONSOLE
  *----------------------------------------------------------------------*/
-#if defined(CONFIG_CONSOLE_JTAG)
+#define CONFIG_ALTERA_UART		1	/* Use altera uart */
+#if defined(CONFIG_ALTERA_JTAG_UART)
 #define CONFIG_SYS_NIOS_CONSOLE	0x021208b0	/* JTAG UART base addr	*/
 #else
 #define CONFIG_SYS_NIOS_CONSOLE	0x02120840	/* UART base addr	*/