clocksource: samsung_pwm_timer: Use pr_warn instead of pr_warning

As said in commit f2c2cbcc ("powerpc: Use pr_warn instead of
pr_warning"), removing pr_warning so all logging messages use a
consistent <prefix>_warn style. Let's do it.

Link: http://lkml.kernel.org/r/20191018031850.48498-11-wangkefeng.wang@huawei.com
To: linux-kernel@vger.kernel.org
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
[pmladek@suse.com: Fixed indentation]
Signed-off-by: Petr Mladek <pmladek@suse.com>

drivers/clocksource/samsung_pwm_timer.c

@@ -430,8 +430,7 @@ static int __init samsung_pwm_alloc(struct device_node *np,
 
 	of_property_for_each_u32(np, "samsung,pwm-outputs", prop, cur, val) {
 		if (val >= SAMSUNG_PWM_NUM) {
-			pr_warning("%s: invalid channel index in samsung,pwm-outputs property\n",
-								__func__);
+			pr_warn("%s: invalid channel index in samsung,pwm-outputs property\n", __func__);
 			continue;
 		}
 		pwm.variant.output_mask |= 1 << val;