arm64: versal: Enable GPIO command for Versal

Enable GPIO command for Xilinx Versal platform. Driver is updated that's
why it can be used directly. Driver is enabled by default through Kconfig.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/xilinx_versal_virt_defconfig b/configs/xilinx_versal_virt_defconfig
index 3ff23a2..f5ce8a0 100644
--- a/configs/xilinx_versal_virt_defconfig
+++ b/configs/xilinx_versal_virt_defconfig
@@ -19,6 +19,7 @@
 CONFIG_SYS_ALT_MEMTEST=y
 CONFIG_CMD_DM=y
 # CONFIG_CMD_FLASH is not set
+CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_SF=y