defconfig: k2g_evm_defconfig: Enable Cadence QSPI controller

Enable Cadence QSPI controller support to use QSPI on K2G SoC. Also
enable Spansion flash support to access s25fl512s flash present on K2G
QSPI bus.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>

configs/k2g_evm_defconfig

@@ -37,3 +37,5 @@ CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_BAR=y

include/configs/k2g_evm.h

@@ -73,4 +73,10 @@
 #define CONFIG_SF_DEFAULT_BUS		1
 #define CONFIG_SF_DEFAULT_CS		0
 
+#ifndef CONFIG_SPL_BUILD
+#define CONFIG_CADENCE_QSPI
+#define CONFIG_CQSPI_REF_CLK 384000000
+#define CONFIG_CQSPI_DECODER 0x0
+#endif
+
 #endif /* __CONFIG_K2G_EVM_H */