xilinx: versal: Disable LMB for mini configurations

There shouldn't be a reason to have LMB on for these configurations.
LMB was already disabled for ZynqMP by commit 0063487a5b60 ("configs:
zynqmp: Disable LMB for mini u-boot").

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/17d1e9b50b2fd032352911f94f4f213828e0a3f7.1662460892.git.michal.simek@amd.com
diff --git a/configs/xilinx_versal_mini_emmc0_defconfig b/configs/xilinx_versal_mini_emmc0_defconfig
index ef73579..4b626d3 100644
--- a/configs/xilinx_versal_mini_emmc0_defconfig
+++ b/configs/xilinx_versal_mini_emmc0_defconfig
@@ -67,3 +67,4 @@
 CONFIG_FAT_WRITE=y
 # CONFIG_GZIP is not set
 # CONFIG_EFI_LOADER is not set
+# CONFIG_LMB is not set