reset: Rename free() to rfree()

This function name conflicts with our desire to #define free() to
something else on sandbox. Since it deals with resources, rename it to
rfree().

Signed-off-by: Simon Glass <sjg@chromium.org>

drivers/reset/sandbox-reset.c

@@ -79,7 +79,7 @@ static const struct udevice_id sandbox_reset_ids[] = {
 
 struct reset_ops sandbox_reset_reset_ops = {
 	.request = sandbox_reset_request,
-	.free = sandbox_reset_free,
+	.rfree = sandbox_reset_free,
 	.rst_assert = sandbox_reset_assert,
 	.rst_deassert = sandbox_reset_deassert,
 };