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/ls1046ardb_qspi_defconfig b/configs/ls1046ardb_qspi_defconfig
index feab749..45bef3d 100644
--- a/configs/ls1046ardb_qspi_defconfig
+++ b/configs/ls1046ardb_qspi_defconfig
@@ -27,6 +27,7 @@
 CONFIG_FSL_CAAM=y
 CONFIG_FSL_ESDHC=y
 CONFIG_SPI_FLASH=y
+# CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
 CONFIG_PHYLIB=y
 CONFIG_NETDEVICES=y
 CONFIG_PHY_GIGE=y