Format C++ files according to OpenBMC style guide

We don't touch the C yet as upstream hasn't got such a change in place.

Change-Id: Ie6cab4bf99df520bb6655b9b00ae31e762e3c57b
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/.clang-format-c b/.clang-format-c
new file mode 100644
index 0000000..a3ef233
--- /dev/null
+++ b/.clang-format-c
@@ -0,0 +1,6 @@
+BasedOnStyle: LLVM
+IndentWidth: 8
+UseTab: Always
+BreakBeforeBraces: Linux
+AllowShortIfStatementsOnASingleLine: false
+IndentCaseLabels: false