bmc: Create runtime directory for non-persistent configs

Change-Id: I32012e7e798bae5a1c5b02e39b32dc40ba3b580a
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/bmc/firmware-handler/phosphor-ipmi-flash.conf b/bmc/firmware-handler/phosphor-ipmi-flash.conf
new file mode 100644
index 0000000..b34193f
--- /dev/null
+++ b/bmc/firmware-handler/phosphor-ipmi-flash.conf
@@ -0,0 +1 @@
+d /run/phosphor-ipmi-flash 0755 - - -