meta-phosphor: Add host UART over VGA packages

This makes the host UART output over VGA feature a part of meta-phosphor
instead of duplicating it under each machine. Based on witherspoon
commits by Jeremy.

Change-Id: I2cbc47ee06647739eba0c0527fe01b52a0512a27
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/common/recipes-phosphor/video/fbterm/fb.modes b/common/recipes-phosphor/video/fbterm/fb.modes
new file mode 100644
index 0000000..dfc51fe
--- /dev/null
+++ b/common/recipes-phosphor/video/fbterm/fb.modes
@@ -0,0 +1,7 @@
+mode "800x600-60"
+    # D: 40.00 MHz, H: 37.879 kHz, V: 60.32 Hz
+    geometry 800 600 800 600 32
+    timings 0 88 40 23 1 128 4
+    hsync high
+    vsync high
+endmode