Make struct flashchip a field in struct flashctx instead of a complete copy

All the driver conversion work and cleanup has been done by Stefan.
flashrom.c and cli_classic.c are a joint work of Stefan and Carl-Daniel.

Corresponding to flashrom svn r1579.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/m29f400bt.c b/m29f400bt.c
index c9d8a40..8f0329e 100644
--- a/m29f400bt.c
+++ b/m29f400bt.c
@@ -81,7 +81,7 @@
 
 	msg_cdbg("%s: id1 0x%02x, id2 0x%02x\n", __func__, id1, id2);
 
-	if (id1 == flash->manufacture_id && id2 == flash->model_id)
+	if (id1 == flash->chip->manufacture_id && id2 == flash->chip->model_id)
 		return 1;
 
 	return 0;
@@ -130,7 +130,7 @@
 int block_erase_chip_m29f400bt(struct flashctx *flash, unsigned int address,
 			       unsigned int blocklen)
 {
-	if ((address != 0) || (blocklen != flash->total_size * 1024)) {
+	if ((address != 0) || (blocklen != flash->chip->total_size * 1024)) {
 		msg_cerr("%s called with incorrect arguments\n",
 			__func__);
 		return -1;