mmc: sdhci: convert sdhci_set_clock() into a library function

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>

drivers/mmc/host/sdhci-of-arasan.c

@@ -52,6 +52,7 @@ static unsigned int sdhci_arasan_get_timeout_clock(struct sdhci_host *host)
 }
 
 static struct sdhci_ops sdhci_arasan_ops = {
+	.set_clock = sdhci_set_clock,
 	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
 	.get_timeout_clock = sdhci_arasan_get_timeout_clock,
 	.set_bus_width = sdhci_set_bus_width,