configs: at91: Fix wrong definitions for CONFIG_PMECC_CAP

When CONFIG_ATMEL_NAND_HW_PMECC is set, CONFIG_PMECC_CAP defaults
to the value of 2. At the conversion to Kconfig for the PMECC config
values, some boards/defconfigs were wrongly configured.
Update CONFIG_PMECC_CAP to the PMECC_CAP value before the conversion.

Fixes: 49ad40298c ("ARM: at91: Convert SPL_GENERATE_ATMEL_PMECC_HEADER to Kconfig")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
diff --git a/configs/sama5d36ek_cmp_nandflash_defconfig b/configs/sama5d36ek_cmp_nandflash_defconfig
index ed78f4e..a3b2fac 100644
--- a/configs/sama5d36ek_cmp_nandflash_defconfig
+++ b/configs/sama5d36ek_cmp_nandflash_defconfig
@@ -46,6 +46,7 @@
 CONFIG_GENERIC_ATMEL_MCI=y
 CONFIG_MTD=y
 CONFIG_NAND_ATMEL=y
+CONFIG_PMECC_CAP=4
 CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000