Fix makefile

Corresponding to flashrom svn r4 and coreboot v2 svn r1376.
diff --git a/Makefile b/Makefile
index 5c8ffe9..fee59e3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 OBJS = jedec.o sst28sf040.o am29f040b.o mx29f002.c sst39sf020.o m29f400bt.o \
-	w49f002u.o 82802ab.o msys_doc.o
+	w49f002u.o 82802ab.o msys_doc.o pm49fl004.o
 CC = gcc -O2 -g -Wall -Werror
 
 all: flash_rom flash_on
@@ -26,5 +26,6 @@
 sst28sf040.o: sst28sf040.c sst28sf040.h jedec.h flash.h
 sst39sf020.o: sst39sf020.c sst39sf020.h jedec.h flash.h
 w49f002u.o:   w49f002u.c   w49f002u.h   jedec.h flash.h
+pm49fl004.o:   pm49fl004.c   pm49fl004.h   jedec.h flash.h
 
 jedec.o:      jedec.c                   jedec.h flash.h