[media] s5p-fimc: Only build suspend/resume for PM

If power management is disabled these functions become unused, so there
is no reason to build them. This fixes a couple of build warnings when
PM(_SLEEP,_RUNTIME) is not enabled.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/exynos4-is/fimc-core.c

@@ -832,6 +832,7 @@ static int fimc_clk_get(struct fimc_dev *fimc)
 	return -ENXIO;
 }
 
+#if defined(CONFIG_PM_RUNTIME) || defined(CONFIG_PM_SLEEP)
 static int fimc_m2m_suspend(struct fimc_dev *fimc)
 {
 	unsigned long flags;
@@ -870,6 +871,7 @@ static int fimc_m2m_resume(struct fimc_dev *fimc)
 
 	return 0;
 }
+#endif /* CONFIG_PM_RUNTIME || CONFIG_PM_SLEEP */
 
 static const struct of_device_id fimc_of_match[];