Add support for SST25LF020A

Tested on hardware by Idwer too.

Corresponding to flashrom svn r1787.

Signed-off-by: Idwer Vollering <vidwer@gmail.com>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/flashchips.c b/flashchips.c
index ede5dc2..8059374 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -9614,6 +9614,38 @@
 
 	{
 		.vendor		= "SST",
+		.name		= "SST25LF020A",
+		.bustype	= BUS_SPI,
+		.manufacture_id	= SST_ID,
+		.model_id	= SST_SST25VF020_REMS,
+		.total_size	= 256,
+		.page_size	= 256,
+		.feature_bits	= FEATURE_WRSR_EWSR,
+		.tested		= TEST_OK_PREW,
+		.probe		= probe_spi_rems,
+		.probe_timing	= TIMING_ZERO,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { {4 * 1024, 64} },
+				.block_erase = spi_block_erase_20,
+			}, {
+				.eraseblocks = { {32 * 1024, 8} },
+				.block_erase = spi_block_erase_52,
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = spi_block_erase_60,
+			},
+		},
+		.printlock	= spi_prettyprint_status_register_sst25, /* FIXME: No BP2 & 3 */
+		.unlock		= spi_disable_blockprotect,
+		.write		= spi_chip_write_1, /* AAI supported, but opcode is 0xAF */
+		.read		= spi_chip_read, /* Fast read (0x0B) supported */
+		.voltage	= {2700, 3600},
+	},
+
+	{
+		.vendor		= "SST",
 		.name		= "SST25LF040A",
 		.bustype	= BUS_SPI,
 		.manufacture_id	= SST_ID,