arm64: versal: mini_emmc: Enable fatwrite support

This patch enable fatwrite support for mini emmc configurations.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
diff --git a/configs/xilinx_versal_mini_emmc0_defconfig b/configs/xilinx_versal_mini_emmc0_defconfig
index 08d2324..49386e2 100644
--- a/configs/xilinx_versal_mini_emmc0_defconfig
+++ b/configs/xilinx_versal_mini_emmc0_defconfig
@@ -50,4 +50,5 @@
 # CONFIG_DM_DEVICE_REMOVE is not set
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_ZYNQ=y
+CONFIG_FAT_WRITE=y
 # CONFIG_EFI_LOADER is not set