ARM: omap2: fix omap5_realtime_timer_init definition

There is one more regression introduced by the last build fix:

arch/arm/mach-omap2/timer.c:170:6: error: attribute declaration must precede definition [-Werror,-Wignored-attributes]
void __init omap5_realtime_timer_init(void)
     ^
arch/arm/mach-omap2/common.h:118:20: note: previous definition is here
static inline void omap5_realtime_timer_init(void)
                   ^
arch/arm/mach-omap2/timer.c:170:13: error: redefinition of 'omap5_realtime_timer_init'
void __init omap5_realtime_timer_init(void)
            ^
arch/arm/mach-omap2/common.h:118:20: note: previous definition is here
static inline void omap5_realtime_timer_init(void)

Address this by removing the now obsolete #ifdefs in that file and
just building the entire file based on the flag that controls the
omap5_realtime_timer_init function declaration.

Link: https://lore.kernel.org/r/20200529201701.521933-1-arnd@arndb.de
Fixes: d86ad463 ("ARM: OMAP2+: Fix regression for using local timer on non-SMP SoCs")
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-omap2/Makefile

@@ -46,9 +46,9 @@ obj-$(CONFIG_SOC_OMAP5)			+= $(omap-4-5-common) $(smp-y) sleep44xx.o
 obj-$(CONFIG_SOC_AM43XX)		+= $(omap-4-5-common)
 obj-$(CONFIG_SOC_DRA7XX)		+= $(omap-4-5-common) $(smp-y) sleep44xx.o
 
-omap5-dra7-common			=  timer.o
-obj-$(CONFIG_SOC_OMAP5)			+= $(omap5-dra7-common)
-obj-$(CONFIG_SOC_DRA7XX)		+= $(omap5-dra7-common)
+omap5-dra7-common-$(CONFIG_SOC_HAS_REALTIME_COUNTER) =  timer.o
+obj-$(CONFIG_SOC_OMAP5)			+= $(omap5-dra7-common-y)
+obj-$(CONFIG_SOC_DRA7XX)		+= $(omap5-dra7-common-y)
 
 # Functions loaded to SRAM
 obj-$(CONFIG_SOC_OMAP2420)		+= sram242x.o

arch/arm/mach-omap2/timer.c

@@ -39,8 +39,6 @@
 #define INCREMENTER_DENUMERATOR_RELOAD_OFFSET		0x14
 #define NUMERATOR_DENUMERATOR_MASK			0xfffff000
 
-#ifdef CONFIG_SOC_HAS_REALTIME_COUNTER
-
 static unsigned long arch_timer_freq;
 
 void set_cntfreq(void)
@@ -159,14 +157,6 @@ static void __init realtime_counter_init(void)
 	iounmap(base);
 }
 
-#else
-
-static inline void realtime_counter_init(void)
-{
-}
-
-#endif	/* CONFIG_SOC_HAS_REALTIME_COUNTER */
-
 void __init omap5_realtime_timer_init(void)
 {
 	omap_clk_init();