Convert the remaining references to *_49fl00x

Now the only remaining and used function in pm49fl00x.c is unlock_49fl00x.

Also:
 - Add missing unlock to AMIC A49LF040A.
 - Add lock_49fl00x function.

Corresponding to flashrom svn r917.

Signed-off-by: Sean Nelson <audiohacked@gmail.com>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/chipdrivers.h b/chipdrivers.h
index 059100e..a378803 100644
--- a/chipdrivers.h
+++ b/chipdrivers.h
@@ -87,10 +87,8 @@
 			  chipaddr dst, int page_size);
 
 /* pm49fl00x.c */
-int probe_49fl00x(struct flashchip *flash);
-int erase_49fl00x(struct flashchip *flash);
-int write_49fl00x(struct flashchip *flash, uint8_t *buf);
 int unlock_49fl00x(struct flashchip *flash);
+int lock_49fl00x(struct flashchip *flash);
 
 /* sharplhf00l04.c */
 int probe_lhf00l04(struct flashchip *flash);