Remove HIDL_GENERATED from things written by hand.

find . -name "*.h" -exec sed -i 's/HIDL_GENERATED_\(.*\)_H_/\U\1_H/g' {}
+

They now match what would be generated by -Lc++-impl. This prevents
confusion over whether or not the files are autogenerated.

Change-Id: I4aa89a39907024aa9525df71ff3715979f431357
Similar commit: https://android-review.googlesource.com/#/c/305996/
Test: pass
diff --git a/tv/cec/1.0/default/HdmiCec.h b/tv/cec/1.0/default/HdmiCec.h
index a41a5f0..34a3bb0 100644
--- a/tv/cec/1.0/default/HdmiCec.h
+++ b/tv/cec/1.0/default/HdmiCec.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef HIDL_GENERATED_android_hardware_tv_cec_V1_0_HdmiCec_H_
-#define HIDL_GENERATED_android_hardware_tv_cec_V1_0_HdmiCec_H_
+#ifndef ANDROID_HARDWARE_TV_CEC_V1_0_HDMICEC_H
+#define ANDROID_HARDWARE_TV_CEC_V1_0_HDMICEC_H
 
 #include <algorithm>
 
@@ -101,4 +101,4 @@
 }  // namespace hardware
 }  // namespace android
 
-#endif  // HIDL_GENERATED_android_hardware_tv_cec_V1_0_HdmiCec_H_
+#endif  // ANDROID_HARDWARE_TV_CEC_V1_0_HDMICEC_H