compiler/spirv: The spirv shader is binary, should write in binary mode

Fixes: 53265c8798 ("spirv: Add a mechanism for dumping failing shaders")

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26775>

src/compiler/spirv/spirv_to_nir.c

@@ -156,7 +156,7 @@ vtn_dump_shader(struct vtn_builder *b, const char *path, const char *prefix)
    if (len < 0 || len >= sizeof(filename))
       return;
 
-   FILE *f = fopen(filename, "w");
+   FILE *f = fopen(filename, "wb");
    if (f == NULL)
       return;