Convert CONFIG_SD_BOOT et al to Kconfig

This converts the following to Kconfig:
   CONFIG_SD_BOOT
   CONFIG_SD_BOOT_QSPI

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/ls1021atwr_sdcard_ifc_SECURE_BOOT_defconfig b/configs/ls1021atwr_sdcard_ifc_SECURE_BOOT_defconfig
index f3ecf43..7f1c700 100644
--- a/configs/ls1021atwr_sdcard_ifc_SECURE_BOOT_defconfig
+++ b/configs/ls1021atwr_sdcard_ifc_SECURE_BOOT_defconfig
@@ -27,10 +27,10 @@
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
-CONFIG_SYS_EXTRA_OPTIONS="SD_BOOT"
 CONFIG_RAMBOOT_PBL=y
 CONFIG_SYS_FSL_PBL_PBI="board/freescale/ls1021atwr/ls102xa_pbi.cfg"
 CONFIG_SYS_FSL_PBL_RCW="board/freescale/ls1021atwr/ls102xa_rcw_sd_ifc.cfg"
+CONFIG_SD_BOOT=y
 CONFIG_BOOTDELAY=0
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttyS0,115200 root=/dev/ram0"
@@ -84,6 +84,7 @@
 CONFIG_TSEC_ENET=y
 CONFIG_PCI=y
 CONFIG_PCIE_LAYERSCAPE_RC=y
+CONFIG_U_QE=y
 CONFIG_SYS_QE_FW_ADDR=0x940000
 CONFIG_SYS_NS16550=y
 CONFIG_USB=y