Input: tegra-kbc - add clk_prepare/clk_unprepare

Use clk_prepare/clk_unprepare as required by the generic clk framework.

Signed-off-by: Prashant Gaikwad <[e-mail]>
Signed-off-by: Stephen Warren <[e-mail]>
Acked-by: Dmitry Torokhov <[e-mail]>

drivers/input/keyboard/tegra-kbc.c

···
 	unsigned int debounce_cnt;
 	u32 val = 0;
 
-	clk_enable(kbc->clk);
+	clk_prepare_enable(kbc->clk);
 
 	/* Reset the KBC controller to clear all previous status.*/
 	tegra_periph_reset_assert(kbc->clk);
···
 	disable_irq(kbc->irq);
 	del_timer_sync(&kbc->timer);
 
-	clk_disable(kbc->clk);
+	clk_disable_unprepare(kbc->clk);
 }
 
 static int tegra_kbc_open(struct input_dev *dev)