[PATCH docs] doc: Add doc for BMC dbus object

[OpenBMC Patches]

From: Yi Li <adamliyi at msn.com>

Add coldReset() method.

Signed-off-by: Yi Li <adamliyi at msn.com>
---
 dbus-interfaces.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dbus-interfaces.md b/dbus-interfaces.md
index 28fe410..21bf56c 100644
--- a/dbus-interfaces.md
+++ b/dbus-interfaces.md
@@ -151,4 +151,10 @@ properties:
 
   *  `state`
 
+# BMC
 
+## `/org/openbmc/control/bmc/bmc0`
+
+methods:
+
+  * `coldReset()`
-- 
2.6.4