Convert CONFIG_CADENCE_QSPI to Kconfig

This converts the following to Kconfig:
   CONFIG_CADENCE_QSPI
Signed-off-by: NTom Rini <trini@konsulko.com>

configs/k2g_evm_defconfig

@@ -74,6 +74,7 @@ CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y
 CONFIG_SPI=y
 CONFIG_DM_SPI=y
+CONFIG_CADENCE_QSPI=y
 CONFIG_DAVINCI_SPI=y
 CONFIG_USB=y
 CONFIG_DM_USB=y

configs/k2g_hs_evm_defconfig

@@ -62,6 +62,7 @@ CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y
 CONFIG_SPI=y
 CONFIG_DM_SPI=y
+CONFIG_CADENCE_QSPI=y
 CONFIG_DAVINCI_SPI=y
 CONFIG_USB=y
 CONFIG_DM_USB=y

drivers/spi/Makefile

@@ -6,6 +6,7 @@
 # There are many options which enable SPI, so make this library available
 ifdef CONFIG_$(SPL_TPL_)DM_SPI
 obj-y += spi-uclass.o
+obj-$(CONFIG_CADENCE_QSPI) += cadence_qspi.o cadence_qspi_apb.o
 obj-$(CONFIG_SANDBOX) += spi-emul-uclass.o
 obj-$(CONFIG_SOFT_SPI) += soft_spi.o
 obj-$(CONFIG_SPI_MEM) += spi-mem.o
@@ -22,7 +23,6 @@ obj-$(CONFIG_ATMEL_SPI) += atmel_spi.o
 obj-$(CONFIG_BCM63XX_HSSPI) += bcm63xx_hsspi.o
 obj-$(CONFIG_BCM63XX_SPI) += bcm63xx_spi.o
 obj-$(CONFIG_BCMSTB_SPI) += bcmstb_spi.o
-obj-$(CONFIG_CADENCE_QSPI) += cadence_qspi.o cadence_qspi_apb.o
 obj-$(CONFIG_CF_SPI) += cf_spi.o
 obj-$(CONFIG_DAVINCI_SPI) += davinci_spi.o
 obj-$(CONFIG_DESIGNWARE_SPI) += designware_spi.o

include/configs/k2g_evm.h

@@ -82,7 +82,6 @@
 #define PHY_ANEG_TIMEOUT	10000 /* PHY needs longer aneg time */
 
 #ifndef CONFIG_SPL_BUILD
-#define CONFIG_CADENCE_QSPI
 #define CONFIG_CQSPI_REF_CLK 384000000
 #endif