xilinx: Enable support for SquashFS

Enable SquashFS for all xilinx platforms.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/dbe85afda8cd90ebfc537979d382808ff9bec160.1655982259.git.michal.simek@amd.com
diff --git a/configs/xilinx_versal_virt_defconfig b/configs/xilinx_versal_virt_defconfig
index c9ae018..1ab9ae2 100644
--- a/configs/xilinx_versal_virt_defconfig
+++ b/configs/xilinx_versal_virt_defconfig
@@ -44,6 +44,7 @@
 CONFIG_CMD_TIME=y
 CONFIG_CMD_TIMER=y
 CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_SQUASHFS=y
 CONFIG_CMD_MTDPARTS=y
 CONFIG_CMD_UBI=y
 CONFIG_PARTITION_TYPE_GUID=y