libvpx: Pull from upstream

source/libvpx/test/register_state_check.h

Index: source/libvpx/test/register_state_check.h
diff --git a/source/libvpx/test/register_state_check.h b/source/libvpx/test/register_state_check.h
index 8d4beea5f06006a02ad5df8bca4e3f9bf0e2fde6..8e72f9113db64a3fa4a30e7673aa08edc694b011 100644
--- a/source/libvpx/test/register_state_check.h
+++ b/source/libvpx/test/register_state_check.h
@@ -96,7 +96,7 @@ class RegisterStateCheck {
 
 extern "C" {
 // Save the d8-d15 registers into store.
-void vp9_push_neon(int64_t *store);
+void vpx_push_neon(int64_t *store);
 }
 
 namespace libvpx_test {
@@ -111,7 +111,7 @@ class RegisterStateCheck {
 
  private:
   static bool StoreRegisters(int64_t store[8]) {
-    vp9_push_neon(store);
+    vpx_push_neon(store);
     return true;
   }
 
@@ -119,7 +119,7 @@ class RegisterStateCheck {
   bool Check() const {
     if (!initialized_) return false;
     int64_t post_store[8];
-    vp9_push_neon(post_store);
+    vpx_push_neon(post_store);
     for (int i = 0; i < 8; ++i) {
       EXPECT_EQ(pre_store_[i], post_store[i]) << "d"
           << i + 8 << " has been modified";