clk: 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>
diff --git a/drivers/clk/clk-ti-sci.c b/drivers/clk/clk-ti-sci.c
index ed1facb..8212435 100644
--- a/drivers/clk/clk-ti-sci.c
+++ b/drivers/clk/clk-ti-sci.c
@@ -203,7 +203,7 @@
 static struct clk_ops ti_sci_clk_ops = {
 	.of_xlate = ti_sci_clk_of_xlate,
 	.request = ti_sci_clk_request,
-	.free = ti_sci_clk_free,
+	.rfree = ti_sci_clk_free,
 	.get_rate = ti_sci_clk_get_rate,
 	.set_rate = ti_sci_clk_set_rate,
 	.set_parent = ti_sci_clk_set_parent,