meta-nuvoton: npcm8xx-bootloader: initial recipe

Add new recipe npcm8xx-bootloader to replace npcm8xx-igps-native, and
also remove relative merge/sign functions and settings.

Tested:
TIP/No TIP/SA boot OK.
Settings replace function work, hardening replace work.

Change-Id: I1db20b483cf1de72ce05ca2a14df0a75fdb37d36
Signed-off-by: Brian Ma <chma0@nuvoton.com>
diff --git a/meta-nuvoton/recipes-bsp/images/npcm8xx-bootloader/settings.json b/meta-nuvoton/recipes-bsp/images/npcm8xx-bootloader/settings.json
new file mode 100644
index 0000000..8a741dc
--- /dev/null
+++ b/meta-nuvoton/recipes-bsp/images/npcm8xx-bootloader/settings.json
@@ -0,0 +1,13 @@
+{
+    "BootBlockAndHeader.xml":
+    {
+        "MC_CONFIG": "0x04"
+    },
+    "key_setting_edit_me.py":
+    {
+        "COMBO1_OFFSET": "2048*1024"
+    },
+    "BootBlockAndHeader_no_tip.xml":
+    {
+    }
+}