powerpc: Remove ucache_bsize

ppc601 and e200 were the users of ucache_bsize.
ppc601 and e200 are now gone.

Remove ucache_bsize.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/288b6048597c0fdc495b203fda57a223d89499d2.1605589460.git.christophe.leroy@csgroup.eu

arch/powerpc/include/asm/elf.h

@@ -168,7 +168,7 @@ do {									\
 	/* Cache size items */						\
 	NEW_AUX_ENT(AT_DCACHEBSIZE, dcache_bsize);			\
 	NEW_AUX_ENT(AT_ICACHEBSIZE, icache_bsize);			\
-	NEW_AUX_ENT(AT_UCACHEBSIZE, ucache_bsize);			\
+	NEW_AUX_ENT(AT_UCACHEBSIZE, 0);					\
 	VDSO_AUX_ENT(AT_SYSINFO_EHDR, (unsigned long)current->mm->context.vdso);\
 	ARCH_DLINFO_CACHE_GEOMETRY;					\
 } while (0)

arch/powerpc/kernel/setup-common.c

@@ -90,8 +90,6 @@ EXPORT_SYMBOL_GPL(boot_cpuid);
  */
 int dcache_bsize;
 int icache_bsize;
-int ucache_bsize;
-
 
 unsigned long klimit = (unsigned long) _end;
 
@@ -802,8 +800,6 @@ static __init void print_system_info(void)
 
 	pr_info("dcache_bsize      = 0x%x\n", dcache_bsize);
 	pr_info("icache_bsize      = 0x%x\n", icache_bsize);
-	if (ucache_bsize != 0)
-		pr_info("ucache_bsize      = 0x%x\n", ucache_bsize);
 
 	pr_info("cpu_features      = 0x%016lx\n", cur_cpu_spec->cpu_features);
 	pr_info("  possible        = 0x%016lx\n",

arch/powerpc/kernel/setup_32.c

@@ -222,5 +222,4 @@ __init void initialize_cache_info(void)
 	 */
 	dcache_bsize = cur_cpu_spec->dcache_bsize;
 	icache_bsize = cur_cpu_spec->icache_bsize;
-	ucache_bsize = 0;
 }