meta-romulus: Add fan presence yaml config

Romulus has 3 fans using aspeed fan tacho, and has no GPIOs to detect
fan presences.

So assuming the fans are present as long as fan tach is there.

Change-Id: I60f36f8127a437511fde22a4c45458b70b4074ed
Signed-off-by: Lei YU <mine260309@gmail.com>
diff --git a/meta-romulus/recipes-phosphor/fans/phosphor-fan-presence-config-native%/config.yaml b/meta-romulus/recipes-phosphor/fans/phosphor-fan-presence-config-native%/config.yaml
new file mode 100644
index 0000000..5acb91f
--- /dev/null
+++ b/meta-romulus/recipes-phosphor/fans/phosphor-fan-presence-config-native%/config.yaml
@@ -0,0 +1,20 @@
+- name: fan0
+  path: /system/chassis/motherboard/fan0
+  methods:
+    - type: tach
+      sensors:
+        - fan0
+
+- name: fan1
+  path: /system/chassis/motherboard/fan1
+  methods:
+    - type: tach
+      sensors:
+        - fan1
+
+- name: fan2
+  path: /system/chassis/motherboard/fan2
+  methods:
+    - type: tach
+      sensors:
+        - fan2