arm: nuvoton: Add support for Nuvoton NPCM750 BMC

Add basic support for the Nuvoton NPCM750 EVB (Poleg).

Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 57946f6..0afec51 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1004,6 +1004,12 @@
 	select DM
 	select GPIO_EXTRA_HEADER
 
+config ARCH_NPCM
+	bool "Support Nuvoton SoCs"
+	select DM
+	select OF_CONTROL
+	imply CMD_DM
+
 config ARCH_APPLE
 	bool "Apple SoCs"
 	select ARM64
@@ -2279,6 +2285,8 @@
 
 source "arch/arm/mach-nexell/Kconfig"
 
+source "arch/arm/mach-npcm/Kconfig"
+
 source "board/armltd/total_compute/Kconfig"
 
 source "board/bosch/shc/Kconfig"