mtd: spi-nor: Add a macro to define more banks

Most of the chips on the market only feature a single bank. However, new
chips may support more than a single bank, with the possibility to
parallelize some operations. Let's introduce an INFOB() macro which also
takes a n_bank parameter.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/r/20230328154105.448540-3-miquel.raynal@bootlin.comSigned-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>

drivers/mtd/spi-nor/core.h

@@ -555,6 +555,10 @@ struct flash_info {
 	SPI_NOR_ID((_jedec_id), (_ext_id)),				\
 	SPI_NOR_GEOMETRY((_sector_size), (_n_sectors), 1),
 
+#define INFOB(_jedec_id, _ext_id, _sector_size, _n_sectors, _n_banks)	\
+	SPI_NOR_ID((_jedec_id), (_ext_id)),				\
+	SPI_NOR_GEOMETRY((_sector_size), (_n_sectors), (_n_banks)),
+
 #define INFO6(_jedec_id, _ext_id, _sector_size, _n_sectors)		\
 	SPI_NOR_ID6((_jedec_id), (_ext_id)),				\
 	SPI_NOR_GEOMETRY((_sector_size), (_n_sectors), 1),