sh: cpuidle: Migrate off of hwblk API.

Now that the hwblk API is unused and going away, migrate cpuidle off of
it. This is a pretty straightforward migration given that we weren't
really making use of the allowed mode overloading in the first place, so
simply default to regular sleep mode.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/include/asm/hwblk.h

@@ -49,7 +49,6 @@ struct hwblk_info {
     !defined(CONFIG_CPU_SUBTYPE_SH7724)
 /* Should be defined by processor-specific code */
 int arch_hwblk_init(void);
-int arch_hwblk_sleep_mode(void);
 
 int hwblk_register(struct hwblk_info *info);
 int hwblk_init(void);

arch/sh/kernel/cpu/hwblk.c

@@ -106,11 +106,6 @@ int __init __weak arch_hwblk_init(void)
 	return 0;
 }
 
-int __weak arch_hwblk_sleep_mode(void)
-{
-	return SUSP_SH_SLEEP;
-}
-
 int __init hwblk_init(void)
 {
 	return arch_hwblk_init();

arch/sh/kernel/cpu/shmobile/cpuidle.c

@@ -17,7 +17,6 @@
 #include <linux/export.h>
 #include <asm/suspend.h>
 #include <asm/uaccess.h>
-#include <asm/hwblk.h>
 
 static unsigned long cpuidle_mode[] = {
 	SUSP_SH_SLEEP, /* regular sleep mode */
@@ -29,7 +28,7 @@ static int cpuidle_sleep_enter(struct cpuidle_device *dev,
 				struct cpuidle_driver *drv,
 				int index)
 {
-	unsigned long allowed_mode = arch_hwblk_sleep_mode();
+	unsigned long allowed_mode = SUSP_SH_SLEEP;
 	ktime_t before, after;
 	int requested_state = index;
 	int allowed_state;