clk: clk-gate: Use struct udevice instead of struct device

Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-gate registration.

Signed-off-by: Marek Vasut <marex@denx.de>

include/linux/clk-provider.h

@@ -105,7 +105,7 @@ struct clk_gate {
 #define CLK_GATE_HIWORD_MASK		BIT(1)
 
 extern const struct clk_ops clk_gate_ops;
-struct clk *clk_register_gate(struct device *dev, const char *name,
+struct clk *clk_register_gate(struct udevice *dev, const char *name,
 			      const char *parent_name, unsigned long flags,
 			      void __iomem *reg, u8 bit_idx,
 			      u8 clk_gate_flags, spinlock_t *lock);