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/mach-npcm/Makefile b/arch/arm/mach-npcm/Makefile
new file mode 100644
index 0000000..8a1572b
--- /dev/null
+++ b/arch/arm/mach-npcm/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ARCH_NPCM7xx) += npcm7xx/