Fix encode_strategy.h include guard naming

It was AOM_AV1_ENCODE_STRATEGY_H_, it should have been
AOM_AV1_ENCODER_ENCODE_STRATEGY_H_

Change-Id: Ic09fba1077ea1c57bc45851b82a82630866be3a9
diff --git a/av1/encoder/encode_strategy.h b/av1/encoder/encode_strategy.h
index 89f2d34..281b740 100644
--- a/av1/encoder/encode_strategy.h
+++ b/av1/encoder/encode_strategy.h
@@ -9,8 +9,8 @@
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  */
 
-#ifndef AOM_AV1_ENCODE_STRATEGY_H_
-#define AOM_AV1_ENCODE_STRATEGY_H_
+#ifndef AOM_AV1_ENCODER_ENCODE_STRATEGY_H_
+#define AOM_AV1_ENCODER_ENCODE_STRATEGY_H_
 
 #ifdef __cplusplus
 extern "C" {
@@ -26,4 +26,4 @@
 }  // extern "C"
 #endif
 
-#endif  // AOM_AV1_ENCODE_STRATEGY_H_
+#endif  // AOM_AV1_ENCODER_ENCODE_STRATEGY_H_