sh: Tidy CPU probing and fixup section annotations.

This does a detect_cpu_and_cache_system() -> cpu_probe() rename, tidies
up the unused return value, and stuffs it under __cpuinit in preparation
for CPU hotplug.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/include/asm/cache.h

@@ -38,14 +38,10 @@ struct cache_info {
 	 * 2. those in the physical page number.
 	 */
 	unsigned int alias_mask;
-
 	unsigned int n_aliases;		/* Number of aliases */
 
 	unsigned long flags;
 };
-
-int __init detect_cpu_and_cache_system(void);
-
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* __ASM_SH_CACHE_H */