Add PCI support for Sorcery board.
Code cleanup (especially Sorcery / Alaska / Yukon serial driver).
diff --git a/board/alaska/Makefile b/board/alaska/Makefile
index e4fe110..a4c1d2e 100644
--- a/board/alaska/Makefile
+++ b/board/alaska/Makefile
@@ -24,7 +24,7 @@
 
 LIB	= lib$(BOARD).a
 
-OBJS	:= $(BOARD).o flash.o extserial.o
+OBJS	:= $(BOARD).o flash.o
 
 $(LIB):	$(OBJS) $(SOBJS)
 	$(AR) crv $@ $(OBJS)