configs: Disable 4k erase sector size for spansion "s25fs512s" flash

4K erase size is used only in case of hydrid mode which is not
supported on any NXP platform with flash "s25fs512s".
Supported mode is uniform sector, with erase size 256kiB.

Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/configs/ls1012afrdm_qspi_defconfig b/configs/ls1012afrdm_qspi_defconfig
index 2bc13be..b5f5d01 100644
--- a/configs/ls1012afrdm_qspi_defconfig
+++ b/configs/ls1012afrdm_qspi_defconfig
@@ -31,6 +31,7 @@
 # CONFIG_MMC is not set
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SPI_FLASH=y
+# CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
 CONFIG_FSL_PFE=y
 CONFIG_DM_ETH=y
 CONFIG_E1000=y