ARM: configs: at91: sama7: Enable NAND / SMC

Enable the Static Memory Controller. Tested with Micron MT29F4G08ABAEAWP
NAND flash. Software error correction is not needed, as the SMC includes
a PMECC error correction hardware module.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20220111125641.903624-1-tudor.ambarus@microchip.com

arch/arm/configs/sama7_defconfig

@@ -82,6 +82,9 @@ CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_MTD=y
 CONFIG_MTD_TESTS=m
 CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_RAW_NAND=y
+CONFIG_MTD_NAND_ATMEL=y
+# CONFIG_MTD_NAND_ECC_SW_HAMMING is not set
 CONFIG_MTD_SPI_NOR=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_RAM=y
@@ -174,7 +177,6 @@ CONFIG_DMATEST=y
 CONFIG_STAGING=y
 CONFIG_MICROCHIP_PIT64B=y
 # CONFIG_IOMMU_SUPPORT is not set
-# CONFIG_ATMEL_EBI is not set
 CONFIG_IIO=y
 CONFIG_IIO_SW_TRIGGER=y
 CONFIG_AT91_SAMA5D2_ADC=y