mtd: spinand: gigadevice: Only one dummy byte in QUADIO

The datasheet only lists one dummy byte in the 0xEH operation for the
following chips:
* GD5F1GQ4xExxG
* GD5F1GQ4xFxxG
* GD5F1GQ4UAYIG
* GD5F4GQ4UAYIG

Fixes: c93c613214 ("mtd: spinand: add support for GigaDevice GD5FxGQ4xA")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Tested-by: Chuanhong Guo <gch981213@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200820165121.3192-2-hauke@hauke-m.de

drivers/mtd/nand/spi/gigadevice.c

@@ -21,7 +21,7 @@
 #define GD5FXGQ4UXFXXG_STATUS_ECC_UNCOR_ERROR	(7 << 4)
 
 static SPINAND_OP_VARIANTS(read_cache_variants,
-		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0),
 		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
 		SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
 		SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
@@ -29,7 +29,7 @@ static SPINAND_OP_VARIANTS(read_cache_variants,
 		SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
 
 static SPINAND_OP_VARIANTS(read_cache_variants_f,
-		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0),
 		SPINAND_PAGE_READ_FROM_CACHE_X4_OP_3A(0, 1, NULL, 0),
 		SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
 		SPINAND_PAGE_READ_FROM_CACHE_X2_OP_3A(0, 1, NULL, 0),