configs: ls1046aqds: Move CONFIG_SPI_FLASH_* definitions to defconfigs

LS1046A-QDS has CONFIG_SPI_FLASH_SST, CONFIG_SPI_FLASH_EON and
CONFIG_SPI_FLASH_STMICRO defines present in header. Move these entries
from header to defconfigs.

Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
[Rebased]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/configs/ls1046aqds_qspi_defconfig b/configs/ls1046aqds_qspi_defconfig
index 6002601..0194238 100644
--- a/configs/ls1046aqds_qspi_defconfig
+++ b/configs/ls1046aqds_qspi_defconfig
@@ -57,7 +57,10 @@
 CONFIG_SYS_I2C_EEPROM_ADDR=0x57
 CONFIG_FSL_ESDHC=y
 # CONFIG_SPI_FLASH_BAR is not set
+CONFIG_SPI_FLASH_EON=y
 CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_SST=y
 # CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
 CONFIG_PHYLIB=y
 CONFIG_PHYLIB_10G=y