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>
diff --git a/drivers/reset/reset-rockchip.c b/drivers/reset/reset-rockchip.c
index 3871fc0..4fb9571 100644
--- a/drivers/reset/reset-rockchip.c
+++ b/drivers/reset/reset-rockchip.c
@@ -76,7 +76,7 @@
 
 struct reset_ops rockchip_reset_ops = {
 	.request = rockchip_reset_request,
-	.free = rockchip_reset_free,
+	.rfree = rockchip_reset_free,
 	.rst_assert = rockchip_reset_assert,
 	.rst_deassert = rockchip_reset_deassert,
 };