arm: zynq: Enable FIT fpga loading in SPL for zc706

Enable loading FPGA from FIT image in SPL.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

configs/zynq_zc706_defconfig

@@ -12,9 +12,12 @@ CONFIG_DISTRO_DEFAULTS=y
 CONFIG_FIT=y
 CONFIG_FIT_SIGNATURE=y
 CONFIG_FIT_VERBOSE=y
+CONFIG_SPL_FIT_PRINT=y
+CONFIG_SPL_LOAD_FIT=y
 CONFIG_IMAGE_FORMAT_LEGACY=y
 CONFIG_BOOTCOMMAND="run $modeboot || run distro_bootcmd"
 CONFIG_SPL_STACK_R=y
+CONFIG_SPL_FPGA_SUPPORT=y
 CONFIG_SPL_OS_BOOT=y
 CONFIG_SPL_SPI_LOAD=y
 CONFIG_SYS_PROMPT="Zynq> "
@@ -78,3 +81,4 @@ CONFIG_USB_GADGET_DOWNLOAD=y
 CONFIG_USB_FUNCTION_THOR=y
 CONFIG_WDT=y
 CONFIG_WDT_CDNS=y
+CONFIG_SPL_GZIP=y