can: flexcan: Let device core handle pinctrl

Since commit ab78029 (drivers/pinctrl: grab default handles from device core)
we can rely on device core for handling pinctrl, so remove
devm_pinctrl_get_select_default() from the driver.

Cc: Marc Kleine-Budde <[e-mail]>
Cc: <[e-mail]>
Signed-off-by: Fabio Estevam <[e-mail]>
Signed-off-by: Marc Kleine-Budde <[e-mail]>

drivers/net/can/flexcan.c

···
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
-#include <linux/pinctrl/consumer.h>
 
 #define DRV_NAME			"flexcan"
 
···
 	struct flexcan_priv *priv;
 	struct resource *mem;
 	struct clk *clk_ipg = NULL, *clk_per = NULL;
-	struct pinctrl *pinctrl;
 	void __iomem *base;
 	resource_size_t mem_size;
 	int err, irq;
 	u32 clock_freq = 0;
-
-	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
-	if (IS_ERR(pinctrl))
-		return PTR_ERR(pinctrl);
 
 	if (pdev->dev.of_node)
 		of_property_read_u32(pdev->dev.of_node,