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-socfpga.c b/drivers/reset/reset-socfpga.c
index 93ec9cf..98524eb 100644
--- a/drivers/reset/reset-socfpga.c
+++ b/drivers/reset/reset-socfpga.c
@@ -101,7 +101,7 @@
 
 static const struct reset_ops socfpga_reset_ops = {
 	.request = socfpga_reset_request,
-	.free = socfpga_reset_free,
+	.rfree = socfpga_reset_free,
 	.rst_assert = socfpga_reset_assert,
 	.rst_deassert = socfpga_reset_deassert,
 };