arm64: zynqmp: Enable SPL gzip support for zcu102 and zcu100

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/avnet_ultra96_rev1_defconfig b/configs/avnet_ultra96_rev1_defconfig
index c49c9f2..9ca884e 100644
--- a/configs/avnet_ultra96_rev1_defconfig
+++ b/configs/avnet_ultra96_rev1_defconfig
@@ -92,5 +92,6 @@
 CONFIG_USB_ETHER_ASIX=y
 CONFIG_WDT=y
 CONFIG_WDT_CDNS=y
+CONFIG_SPL_GZIP=y
 CONFIG_OF_LIBFDT_OVERLAY=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y