Run clang-format on the entire repo

This patch clang-formats the entire repo. Third-party code is
excluded.

I needed to fix up the .clang-format file so that all the header
includes are ordered properly. I could have sworn that it used to work
without the extra modification, but I guess not.

Signed-off-by: Philipp Schrader <philipp.schrader@gmail.com>
Change-Id: I64bb9f2c795401393f9dfe2fefc4f04cb36b52f6
diff --git a/motors/peripheral/adc.cc b/motors/peripheral/adc.cc
index 6325f9f..64f1557 100644
--- a/motors/peripheral/adc.cc
+++ b/motors/peripheral/adc.cc
@@ -6,7 +6,9 @@
 namespace motors {
 namespace {
 
-#define ADC_SC2_BASE (ADC_SC2_REFSEL(0) /* Use the external reference pins. */)
+#define ADC_SC2_BASE \
+  (ADC_SC2_REFSEL(0) /* Use the external reference pins. \
+                                         */)
 
 #define ADC_FINISH_CALIBRATION(n, PM) \
   do {                                \