clocksource/drivers/tcb_clksrc: Make tc_clksrc_suspend/resume() static

Fix sparse warnings:

drivers/clocksource/tcb_clksrc.c:74:6: warning:
 symbol 'tc_clksrc_suspend' was not declared. Should it be static?
drivers/clocksource/tcb_clksrc.c:89:6: warning:
 symbol 'tc_clksrc_resume' was not declared. Should it be static?

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <nicolas.ferre@microchip.com>
Cc: <daniel.lezcano@linaro.org>
Cc: <linux-arm-kernel@lists.infradead.org>
Link: https://lkml.kernel.org/r/20190322143940.12396-1-yuehaibing@huawei.com

diff --git a/drivers/clocksource/tcb_clksrc.c b/drivers/clocksource/tcb_clksrc.c
index 43f4d5c..f987027 100644
--- a/drivers/clocksource/tcb_clksrc.c
+++ b/drivers/clocksource/tcb_clksrc.c
@@ -71,7 +71,7 @@
 	return readl_relaxed(tcaddr + ATMEL_TC_REG(0, CV));
 }
 
-void tc_clksrc_suspend(struct clocksource *cs)
+static void tc_clksrc_suspend(struct clocksource *cs)
 {
 	int i;
 
@@ -86,7 +86,7 @@
 	bmr_cache = readl(tcaddr + ATMEL_TC_BMR);
 }
 
-void tc_clksrc_resume(struct clocksource *cs)
+static void tc_clksrc_resume(struct clocksource *cs)
 {
 	int i;