Add support for the Winbond W29C040P

Corresponding to flashrom svn r132 and coreboot v2 svn r2752.
Signed-off-by: Markus Boas <ryven@ryven.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>

README

@@ -149,6 +149,7 @@ SyncMOS S29C51004T/B
 SyncMOS S29C31004T
 Winbond W29C011
 Winbond W29C020C
+Winbond W29C040P
 Winbond W49F002U
 Winbond W49V002A
 Winbond W49V002FA

flash.h

@@ -101,6 +101,7 @@ extern struct flashchip flashchips[];
 #define WINBOND_ID		0xDA	/* Winbond */
 #define W_29C011		0xC1
 #define W_29C020C		0x45
+#define W_29C040P		0x46
 #define W_39V040FA		0x34
 #define W_39V040A		0x3D
 #define W_39V040B		0x54

flashchips.c

@@ -82,6 +82,8 @@ struct flashchip flashchips[] = {
 	 probe_jedec,	erase_chip_jedec, write_49fl004},
 	{"W29C011",	WINBOND_ID,	W_29C011,	128, 128,
 	 probe_jedec,	erase_chip_jedec, write_jedec},
+	{"W29C040P",	WINBOND_ID,	W_29C040P,	512, 256,
+	 probe_jedec,	erase_chip_jedec, write_jedec},
 	{"W29C020C", 	WINBOND_ID, 	W_29C020C,	256, 128,
 	 probe_jedec, 	erase_chip_jedec, write_jedec},
 	{"W49F002U", 	WINBOND_ID, 	W_49F002U,	256, 128,