tty/bcm63xx_uart: use refclk for the expected clock name

We now have the clock available under refclk, so use that.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17327/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>

drivers/tty/serial/bcm63xx_uart.c

@@ -847,7 +847,7 @@ static int bcm_uart_probe(struct platform_device *pdev)
 		return -ENODEV;
 
 	clk = pdev->dev.of_node ? of_clk_get(pdev->dev.of_node, 0) :
-				  clk_get(&pdev->dev, "periph");
+				  clk_get(&pdev->dev, "refclk");
 	if (IS_ERR(clk))
 		return -ENODEV;