spi: Rename SPI_SUPPORT to SPI

Rename these options so that CONFIG_IS_ENABLED can be used with them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig
index 318e948..cf2e727 100644
--- a/arch/arm/mach-zynq/Kconfig
+++ b/arch/arm/mach-zynq/Kconfig
@@ -24,7 +24,7 @@
 config SPL_SPI_FLASH_SUPPORT
 	default y if ZYNQ_QSPI
 
-config SPL_SPI_SUPPORT
+config SPL_SPI
 	default y if ZYNQ_QSPI
 
 config ZYNQ_DDRC_INIT
diff --git a/arch/arm/mach-zynq/spl.c b/arch/arm/mach-zynq/spl.c
index fbb3b37..b1a5184 100644
--- a/arch/arm/mach-zynq/spl.c
+++ b/arch/arm/mach-zynq/spl.c
@@ -45,7 +45,7 @@
 	u32 mode;
 
 	switch ((zynq_slcr_get_boot_mode()) & ZYNQ_BM_MASK) {
-#ifdef CONFIG_SPL_SPI_SUPPORT
+#ifdef CONFIG_SPL_SPI
 	case ZYNQ_BM_QSPI:
 		mode = BOOT_DEVICE_SPI;
 		break;