arm: omap2: timer: provide generic sync32k_timer_init function

instead of constantly defining a small wrapper
around __omap_sync32k_timer_init(), let's define
a generic one which can be used by all OMAPs.
Signed-off-by: Felipe Balbi <balbi@ti.com>

arch/arm/mach-omap2/board-generic.c

@@ -46,7 +46,7 @@ DT_MACHINE_START(OMAP242X_DT, "Generic OMAP2420 (Flattened Device Tree)")
 	.map_io		= omap242x_map_io,
 	.init_early	= omap2420_init_early,
 	.init_machine	= omap_generic_init,
-	.init_time	= omap2_sync32k_timer_init,
+	.init_time	= omap_sync32k_timer_init,
 	.dt_compat	= omap242x_boards_compat,
 	.restart	= omap2xxx_restart,
 MACHINE_END
@@ -63,7 +63,7 @@ DT_MACHINE_START(OMAP243X_DT, "Generic OMAP2430 (Flattened Device Tree)")
 	.map_io		= omap243x_map_io,
 	.init_early	= omap2430_init_early,
 	.init_machine	= omap_generic_init,
-	.init_time	= omap2_sync32k_timer_init,
+	.init_time	= omap_sync32k_timer_init,
 	.dt_compat	= omap243x_boards_compat,
 	.restart	= omap2xxx_restart,
 MACHINE_END
@@ -82,7 +82,7 @@ DT_MACHINE_START(OMAP3_N900_DT, "Nokia RX-51 board")
 	.init_early	= omap3430_init_early,
 	.init_machine	= omap_generic_init,
 	.init_late	= omap3_init_late,
-	.init_time	= omap3_sync32k_timer_init,
+	.init_time	= omap_sync32k_timer_init,
 	.dt_compat	= n900_boards_compat,
 	.restart	= omap3xxx_restart,
 MACHINE_END
@@ -100,7 +100,7 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
 	.init_early	= omap3430_init_early,
 	.init_machine	= omap_generic_init,
 	.init_late	= omap3_init_late,
-	.init_time	= omap3_sync32k_timer_init,
+	.init_time	= omap_sync32k_timer_init,
 	.dt_compat	= omap3_boards_compat,
 	.restart	= omap3xxx_restart,
 MACHINE_END
@@ -116,7 +116,7 @@ DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP36xx (Flattened Device Tree)")
 	.init_early	= omap3630_init_early,
 	.init_machine	= omap_generic_init,
 	.init_late	= omap3_init_late,
-	.init_time	= omap3_sync32k_timer_init,
+	.init_time	= omap_sync32k_timer_init,
 	.dt_compat	= omap36xx_boards_compat,
 	.restart	= omap3xxx_restart,
 MACHINE_END

arch/arm/mach-omap2/board-ldp.c

@@ -424,6 +424,6 @@ MACHINE_START(OMAP_LDP, "OMAP LDP board")
 	.init_irq	= omap3_init_irq,
 	.init_machine	= omap_ldp_init,
 	.init_late	= omap3430_init_late,
-	.init_time	= omap3_sync32k_timer_init,
+	.init_time	= omap_sync32k_timer_init,
 	.restart	= omap3xxx_restart,
 MACHINE_END

arch/arm/mach-omap2/board-rx51.c

@@ -136,6 +136,6 @@ MACHINE_START(NOKIA_RX51, "Nokia RX-51 board")
 	.init_irq	= omap3_init_irq,
 	.init_machine	= rx51_init,
 	.init_late	= omap3430_init_late,
-	.init_time	= omap3_sync32k_timer_init,
+	.init_time	= omap_sync32k_timer_init,
 	.restart	= omap3xxx_restart,
 MACHINE_END

arch/arm/mach-omap2/common.h

@@ -88,8 +88,7 @@ static inline int omap_mux_late_init(void)
 
 extern void omap2_init_common_infrastructure(void);
 
-extern void omap2_sync32k_timer_init(void);
-extern void omap3_sync32k_timer_init(void);
+extern void omap_sync32k_timer_init(void);
 extern void omap3_secure_sync32k_timer_init(void);
 extern void omap3_gptimer_timer_init(void);
 extern void omap4_local_timer_init(void);

arch/arm/mach-omap2/timer.c

@@ -608,21 +608,13 @@ static void __init __omap_sync32k_timer_init(int clkev_nr, const char *clkev_src
 		omap2_sync32k_clocksource_init();
 }
 
-#ifdef CONFIG_ARCH_OMAP2
-void __init omap2_sync32k_timer_init(void)
+void __init omap_sync32k_timer_init(void)
 {
 	__omap_sync32k_timer_init(1, "timer_32k_ck", "ti,timer-alwon",
 			2, "timer_sys_ck", NULL, false);
 }
-#endif /* CONFIG_ARCH_OMAP2 */
 
 #if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_AM43XX)
-void __init omap3_sync32k_timer_init(void)
-{
-	__omap_sync32k_timer_init(1, "timer_32k_ck", "ti,timer-alwon",
-			2, "timer_sys_ck", NULL, false);
-}
-
 void __init omap3_secure_sync32k_timer_init(void)
 {
 	__omap_sync32k_timer_init(12, "secure_32k_fck", "ti,timer-secure",