Add support for Adesto AT25SF128A

The following adds support for the Adesto AT25SF128A-SHB-T part.
We have varied the correct chip name is reported as well as write
and read 16MBytes of random data and verified the checksum's match.
Further, --wp-list appears to report the correct ranges.

BUG=None
BRANCH=none
TEST=Ran flashrom with a Dediprog SF100, RW random data and checksum
matched.

Original-Change-Id: Ic22ca588f33753fdf492e8445324bcc0a809d3e2
Original-Signed-off-by: Edward O'Callaghan <quasisec@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/1593201
Original-Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Original-Tested-by: Martin Roth <martinroth@chromium.org>
Original-Reviewed-by: Martin Roth <martinroth@chromium.org>
(cherry picked from commit 1fa87e058b72a2de1e9127a45e9978361de48479)

Note: this does not include the changes made to writeprotect.c in the
original patch, as they depend on a large amount of additional
writeprotect code that is currently only present in the cros tree, and
the intention here is just to reduce the diff in flashchips.c.
The `.wp` field has also been removed.

Change-Id: I1ce2a6699a1f0116306f668123673a1ba9c932d2
Signed-off-by: Nikolai Artemiev <nartemiev@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/51097
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>

flashchips.h

@@ -152,6 +152,7 @@
 #define ATMEL_AT25SF161		0x8601
 #define ATMEL_AT25SF321		0x8701
 #define ATMEL_AT25SL128A	0x4218
+#define ATMEL_AT25SF128A	0x8901 /* Adesto AT25SF128A */
 #define ATMEL_AT26DF041		0x4400
 #define ATMEL_AT26DF081		0x4500	/* guessed, no datasheet available */
 #define ATMEL_AT26DF081A	0x4501