Add support for the AMIC A25L80P

This is a 1 MB SPI chip that seems to be straightforwardly related
to the AMIC A25L40PU, which has half the capacity but is otherwise
identical.

Datasheet is at http://www.amictechnology.com/pdf/A25L80P.pdf

flashrom -VE, -Vr, and -Vw has been tested using the AMD SB7x0
interface. Everything works fine... at least, I used it to upgrade my
BIOS and I've been able to reboot.

Corresponding to flashrom svn r1075.

Signed-off-by: Daniel Lenski <dlenski@gmail.com>
Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>

flashchips.c

@@ -1219,6 +1219,37 @@ struct flashchip flashchips[] = {
 		.read		= spi_chip_read,
 	},
 
+	{
+		.vendor		= "AMIC",
+		.name		= "A25L80P",
+		.bustype	= CHIP_BUSTYPE_SPI,
+		.manufacture_id	= AMIC_ID,
+		.model_id	= AMIC_A25L80P,
+		.total_size	= 1024,
+		.page_size	= 256,
+		.tested		= TEST_OK_PREW,
+		.probe		= probe_spi_rdid4,
+		.probe_timing	= TIMING_ZERO,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = {
+					{4 * 1024, 2},
+					{8 * 1024, 1},
+					{16 * 1024, 1},
+					{32 * 1024, 1},
+					{64 * 1024, 15},
+				},
+				.block_erase = spi_block_erase_d8,
+			}, {
+				.eraseblocks = { {1024 * 1024, 1} },
+				.block_erase = spi_block_erase_c7,
+			}
+		},
+		.write		= spi_chip_write_256,
+		.read		= spi_chip_read,
+	},
+
 	{
 		.vendor		= "AMIC",
 		.name		= "A29002B",

flashchips.h

@@ -76,6 +76,7 @@
 #define AMIC_ID			0x7F37	/* AMIC */
 #define AMIC_ID_NOPREFIX	0x37	/* AMIC */
 #define AMIC_A25L40P		0x2013
+#define AMIC_A25L80P		0x2014
 #define AMIC_A29002B		0x0d
 #define AMIC_A29002T		0x8C	/* Same as A290021T */
 #define AMIC_A29040B		0x86