powerpc/64: Move setting of {i,d}cache_bsize to initialize_cache_info()

Also remove the completely osbolete comment. We *do* look in the
device-tree.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/kernel/setup_64.c

@@ -473,6 +473,10 @@ static void __init initialize_cache_info(void)
 		}
 	}
 
+	/* For use by binfmt_elf */
+	dcache_bsize = ppc64_caches.dline_size;
+	icache_bsize = ppc64_caches.iline_size;
+
 	DBG(" <- initialize_cache_info()\n");
 }
 
@@ -691,15 +695,6 @@ void __init setup_arch(char **cmdline_p)
 {
 	*cmdline_p = boot_command_line;
 
-	/*
-	 * Set cache line size based on type of cpu as a default.
-	 * Systems with OF can look in the properties on the cpu node(s)
-	 * for a possibly more accurate value.
-	 */
-	dcache_bsize = ppc64_caches.dline_size;
-	icache_bsize = ppc64_caches.iline_size;
-
-
 	/* Reserve large chunks of memory for use by CMA for KVM */
 	kvm_cma_reserve();