subprojects: add sdbusplus

Add wrap file for sdbusplus to subprojects.

Change-Id: I3218f6335d4dfd2f07576d602ed39809cb01706c
Signed-off-by: Jagpal Singh Gill <paligill@gmail.com>
diff --git a/subprojects/sdbusplus.wrap b/subprojects/sdbusplus.wrap
new file mode 100644
index 0000000..7b076d0
--- /dev/null
+++ b/subprojects/sdbusplus.wrap
@@ -0,0 +1,6 @@
+[wrap-git]
+url = https://github.com/openbmc/sdbusplus.git
+revision = HEAD
+
+[provide]
+sdbusplus = sdbusplus_dep