xilinx: versal-net: Fix incorrect platform name in Kconfig

Fix incorrect name used in entry description.

Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7866e8f..f95ed71 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1230,7 +1230,7 @@
 	imply ENV_VARS_UBOOT_RUNTIME_CONFIG
 
 config ARCH_VERSAL_NET
-	bool "Support Xilinx Keystone Platform"
+	bool "Support Xilinx Versal NET Platform"
 	select ARM64
 	select CLK
 	select DM