mtd: simplify CONFIG_DM_SPI_FLASH dependencies

CONFIG_DM_SPI depends on CONFIG_DM. There is no need to list CONFIG_DM
explicitly as dependency for CONFIG_DM_SPI_FLASH

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Link: https://lore.kernel.org/r/20240604044039.27795-1-heinrich.schuchardt@canonical.com
1 file changed