sh: Centralize the CPU cache initialization routines.

This provides a central point for CPU cache initialization routines.
This replaces the antiquated p3_cache_init() method, which the vast
majority of CPUs never cared about.

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

arch/sh/include/cpu-common/cpu/cacheflush.h

@@ -39,6 +39,4 @@
 #define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
 #define flush_cache_sigtramp(vaddr)		do { } while (0)
 
-#define p3_cache_init()				do { } while (0)
-
 #endif /* __ASM_CPU_SH2_CACHEFLUSH_H */