ARM: shmobile: Make rmobile_init_pm_domain() static

Since rmobile_init_pm_domain() is not called anywhere outside of
arch/arm/mach-shmobile/pm-rmobile.c any more, it can be made static
and its header may be removed from pm-rmobile.h.  Modify the code
accordingly.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@opensource.se>

arch/arm/mach-shmobile/include/mach/pm-rmobile.h

@@ -30,12 +30,10 @@ struct rmobile_pm_domain *to_rmobile_pd(struct generic_pm_domain *d)
 }
 
 #ifdef CONFIG_PM
-extern void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd);
 extern void rmobile_init_domains(struct rmobile_pm_domain domains[], int num);
 extern void rmobile_add_device_to_domain(const char *domain_name,
 					struct platform_device *pdev);
 #else
-#define rmobile_init_pm_domain(pd) do { } while (0)
 #define rmobile_init_domains(domains, num) do { } while (0)
 #define rmobile_add_device_to_domain(name, pdev) do { } while (0)
 #endif /* CONFIG_PM */

arch/arm/mach-shmobile/pm-rmobile.c

@@ -134,7 +134,7 @@ static int rmobile_pd_start_dev(struct device *dev)
 	return ret;
 }
 
-void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
+static void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
 {
 	struct generic_pm_domain *genpd = &rmobile_pd->genpd;
 	struct dev_power_governor *gov = rmobile_pd->gov;