ARM: configs: at91: sama7: Enable SPI NOR and QSPI controller

sama7g5ek comes with a SPI NOR flash connected to the QSPI
controller. Enable the SPI NOR subsystem and the QSPI controller.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20211209153744.357465-2-tudor.ambarus@microchip.com