av1/common/filter.h: apply clang-format

Change-Id: I37f0d1fbcc6f262ae287290e2e6f5648ad0113c8

av1/common/filter.h

diff --git a/av1/common/filter.h b/av1/common/filter.h
index 15fc806..eb39a7f 100644
--- a/av1/common/filter.h
+++ b/av1/common/filter.h
@@ -38,8 +38,8 @@
 #else
 #define SWITCHABLE_FILTERS 3 /* Number of switchable filters */
 #define LOG_SWITCHABLE_FILTERS \
-  2 /* (1 << LOG_SWITCHABLE_FILTERS) > SWITCHABLE_FILTERS */
-#endif                       // CONFIG_EXT_INTERP
+  2     /* (1 << LOG_SWITCHABLE_FILTERS) > SWITCHABLE_FILTERS */
+#endif  // CONFIG_EXT_INTERP
 
 #define USE_TEMPORALFILTER_12TAP 1
 #if USE_TEMPORALFILTER_12TAP