mtd: spi-nor: fix kernel-doc for spi_nor::mtd

When embedding 'struct mtd_info' within 'struct spi_nor', the kernel-doc
comment was forgotten. Fix it by dropping the "pointer to" part from the
comment.

Fixes: 1976367173 ("mtd: spi-nor: embed struct mtd_info within struct spi_nor")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>

include/linux/mtd/spi-nor.h

@@ -328,7 +328,7 @@ struct spi_nor_flash_parameter;
 
 /**
  * struct spi_nor - Structure for defining the SPI NOR layer
- * @mtd:		pointer to an mtd_info structure
+ * @mtd:		an mtd_info structure
  * @lock:		the lock for the read/write/erase/lock/unlock operations
  * @dev:		pointer to an SPI device or an SPI NOR controller device
  * @spimem:		point to the spi mem device