device_tree: qemu_fdt_setprop: Rename val_array arg

Looking at the implementation, this doesn't really have a lot to do
with arrays. Its just a pointer to a buffer and is passed through
to the wrapped fn (qemu_fdt_setprop) unchanged. So rename to make it
consistent with libfdt, which in the wrapped function just calls it
"val".
Signed-off-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>

device_tree.c

@@ -132,11 +132,11 @@ static int findnode_nofail(void *fdt, const char *node_path)
 }
 
 int qemu_fdt_setprop(void *fdt, const char *node_path,
-                     const char *property, const void *val_array, int size)
+                     const char *property, const void *val, int size)
 {
     int r;
 
-    r = fdt_setprop(fdt, findnode_nofail(fdt, node_path), property, val_array, size);
+    r = fdt_setprop(fdt, findnode_nofail(fdt, node_path), property, val, size);
     if (r < 0) {
         fprintf(stderr, "%s: Couldn't set %s/%s: %s\n", __func__, node_path,
                 property, fdt_strerror(r));

include/sysemu/device_tree.h

@@ -18,7 +18,7 @@ void *create_device_tree(int *sizep);
 void *load_device_tree(const char *filename_path, int *sizep);
 
 int qemu_fdt_setprop(void *fdt, const char *node_path,
-                     const char *property, const void *val_array, int size);
+                     const char *property, const void *val, int size);
 int qemu_fdt_setprop_cell(void *fdt, const char *node_path,
                           const char *property, uint32_t val);
 int qemu_fdt_setprop_u64(void *fdt, const char *node_path,