mtd: spi-nor: Add support for EN25Q80A

This adds support for the EON EN25Q80A, a 8Mb SPI NOR chip.
It is used on i.MX6 boards by Kontron Electronics GmbH
(N60xx, N61xx).
It was only tested with a single data line connected, by writing and
reading random data with dd.
Signed-off-by: NFrieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: NTudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: NBoris Brezillon <boris.brezillon@collabora.com>

drivers/mtd/spi-nor/spi-nor.c

@@ -1745,6 +1745,8 @@ static const struct flash_info spi_nor_ids[] = {
 	{ "en25q32b",   INFO(0x1c3016, 0, 64 * 1024,   64, 0) },
 	{ "en25p64",    INFO(0x1c2017, 0, 64 * 1024,  128, 0) },
 	{ "en25q64",    INFO(0x1c3017, 0, 64 * 1024,  128, SECT_4K) },
+	{ "en25q80a",   INFO(0x1c3014, 0, 64 * 1024,   16,
+			SECT_4K | SPI_NOR_DUAL_READ) },
 	{ "en25qh32",   INFO(0x1c7016, 0, 64 * 1024,   64, 0) },
 	{ "en25qh128",  INFO(0x1c7018, 0, 64 * 1024,  256, 0) },
 	{ "en25qh256",  INFO(0x1c7019, 0, 64 * 1024,  512, 0) },