arm: zynq: Add mini u-boot configuration for zynq

Add configuration files/dtses for mini u-boot configurations which runs
out of OCM.

ram top is calculated from 0 that's why +#define CONFIG_SYS_SDRAM_BASE
0xfffc0000
+#define CONFIG_SYS_SDRAM_SIZE  0x40000
was hardcoded.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index debf5e3..7517a5d 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -126,6 +126,7 @@
 
 dtb-$(CONFIG_ARCH_ZYNQ) += \
 	zynq-cc108.dtb \
+	zynq-cse-qspi-single.dtb \
 	zynq-microzed.dtb \
 	zynq-picozed.dtb \
 	zynq-syzygy-hub.dtb \