va/va_dec_av1.h is full of "carriage-returns" (^M)

Using git show, we can see that va/va_dec_av1.h is full of DOS-style carriage-returns (^M).  Please convert them to UNIX-style newlines (e.g. dos2unix).

```
git show 7eb84e416589

<snip>
new file mode 100755
index 000000000000..8952175f75ba
--- /dev/null
+++ b/va/va_dec_av1.h
@@ -0,0 +1,656 @@
+/*^M
+ * Copyright (c) 2019 Intel Corporation. All Rights Reserved.^M
+ *^M
<snip>
```