sh: remove board_time_init() callback

The only remaining user of board_time_init() is the of-generic
machine, and that just calls the global timer_init() function.
Calling that one has no effect on non-DT platforms, so we can
simply call it unconditionally in place of board_time_init().
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/sh/new-machine.txt

@@ -116,7 +116,6 @@ might look something like:
  * arch/sh/boards/vapor/setup.c - Setup code for imaginary board
  */
 #include <linux/init.h>
-#include <asm/rtc.h> /* for board_time_init() */
 
 const char *get_system_type(void)
 {
@@ -132,13 +131,6 @@ int __init platform_setup(void)
 	 * this board.
 	 */
 
-  	/* 
-	 * Presume all FooTech boards have the same broken timer,
-	 * and also presume that we've defined foo_timer_init to
-	 * do something useful.
-	 */
-  	board_time_init = foo_timer_init;
-
 	/* Start-up imaginary PCI ... */
 
 	/* And whatever else ... */

arch/sh/boards/of-generic.c

@@ -117,18 +117,10 @@ static void __init sh_of_mem_reserve(void)
 	early_init_fdt_scan_reserved_mem();
 }
 
-static void __init sh_of_time_init(void)
-{
-	pr_info("SH generic board support: scanning for clocksource devices\n");
-	timer_probe();
-}
-
 static void __init sh_of_setup(char **cmdline_p)
 {
 	struct device_node *root;
 
-	board_time_init = sh_of_time_init;
-
 	sh_mv.mv_name = "Unknown SH model";
 	root = of_find_node_by_path("/");
 	if (root) {

arch/sh/include/asm/rtc.h

@@ -3,7 +3,6 @@
 #define _ASM_RTC_H
 
 void time_init(void);
-extern void (*board_time_init)(void);
 
 #define RTC_CAP_4_DIGIT_YEAR	(1 << 0)
 

arch/sh/kernel/time.c

@@ -22,8 +22,6 @@
 #include <asm/clock.h>
 #include <asm/rtc.h>
 
-void (*board_time_init)(void);
-
 static void __init sh_late_time_init(void)
 {
 	/*
@@ -41,8 +39,7 @@ static void __init sh_late_time_init(void)
 
 void __init time_init(void)
 {
-	if (board_time_init)
-		board_time_init();
+	timer_probe();
 
 	clk_init();