ARM: shmobile: rcar-gen2: Make rcar_gen2_{timer_init, reserve}() static

As of commit 1e90fea3 ("ARM: shmobile: r8a7791: Use common R-Car
Gen2 machine definition"), there are no more users of
rcar_gen2_timer_init() and rcar_gen2_reserve() outside
arch/arm/mach-shmobile/setup-rcar-gen2.c.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20200908074403.4379-1-geert+renesas@glider.be

arch/arm/mach-shmobile/rcar-gen2.h

@@ -2,8 +2,6 @@
 #ifndef __ASM_RCAR_GEN2_H__
 #define __ASM_RCAR_GEN2_H__
 
-void rcar_gen2_timer_init(void);
-void rcar_gen2_reserve(void);
 void rcar_gen2_pm_init(void);
 
 #endif /* __ASM_RCAR_GEN2_H__ */

arch/arm/mach-shmobile/setup-rcar-gen2.c

@@ -59,7 +59,7 @@ static unsigned int __init get_extal_freq(void)
 #define CNTCR 0
 #define CNTFID0 0x20
 
-void __init rcar_gen2_timer_init(void)
+static void __init rcar_gen2_timer_init(void)
 {
 	bool need_update = true;
 	void __iomem *base;
@@ -174,7 +174,7 @@ static int __init rcar_gen2_scan_mem(unsigned long node, const char *uname,
 	return 0;
 }
 
-void __init rcar_gen2_reserve(void)
+static void __init rcar_gen2_reserve(void)
 {
 	struct memory_reserve_config mrc;