meta-quanta: Add meta-runbmc-nuvoton machine

Initial introduction of Quanta RunBMC family.
The meta-runbmc-nuvoton equipped with Nuvoton NPCM750 BMC SoC.

Tested: Build Quanta RunBMC board and load on the target hardware.
Ensure that BMC boots to console.

(From meta-quanta rev: 3501fdf64a14ad925fa911800f662585eb5b5965)

Change-Id: If43607a2c7ae177ea2c91b406d7d99fcf4450936
Signed-off-by: Samuel Jiang <Samuel.Jiang@quantatw.com>
Signed-off-by: PKLee-Quanta <p.k.lee@quantatw.com>
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-quanta/meta-runbmc-nuvoton/conf/conf-notes.txt b/meta-quanta/meta-runbmc-nuvoton/conf/conf-notes.txt
new file mode 100644
index 0000000..9b3c01a
--- /dev/null
+++ b/meta-quanta/meta-runbmc-nuvoton/conf/conf-notes.txt
@@ -0,0 +1,2 @@
+Common targets are:
+     obmc-phosphor-image