Update the libvmaf header

Change-Id: I805f912dabde1007dc6b1826153a796e0f6eabc8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 942f9f2..83e7a3d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -384,7 +384,7 @@
               ${AOM_ENCODER_TOOL_TARGETS})
 
   if(CONFIG_TUNE_VMAF)
-    find_library(VMAF vmaf)
+    find_library(VMAF libvmaf.a vmaf)
     if(NOT VMAF)
       message(FATAL_ERROR "VMAF library not found.")
     endif()
diff --git a/aom_dsp/vmaf.c b/aom_dsp/vmaf.c
index 4e20155..6ad1cc8 100644
--- a/aom_dsp/vmaf.c
+++ b/aom_dsp/vmaf.c
@@ -8,9 +8,8 @@
  * Media Patent License 1.0 was not distributed with this source code in the
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  */
-
 #include <assert.h>
-#include <libvmaf.h>
+#include <libvmaf/libvmaf.h>
 #include <stdlib.h>
 #include "aom_dsp/vmaf.h"
 #include "aom_ports/system_state.h"