spi: Move SPI drivers to defconfig

There are already Kconfig options for SPI drivers, but we
have not moved them from config.h to defconfig files. This
commit does this in a batch.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/socfpga_sockit_defconfig b/configs/socfpga_sockit_defconfig
index 83be4b9..5e56b35 100644
--- a/configs/socfpga_sockit_defconfig
+++ b/configs/socfpga_sockit_defconfig
@@ -18,3 +18,5 @@
 CONFIG_DM_ETH=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_SYS_NS16550=y
+CONFIG_CADENCE_QSPI=y
+CONFIG_DESIGNWARE_SPI=y