kasan: update log messages

We decided to use KASAN as the short name of the tool and
KernelAddressSanitizer as the full one.  Update log messages according to
that.

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Konstantin Serebryany <kcc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/x86/mm/kasan_init_64.c

@@ -126,5 +126,5 @@ void __init kasan_init(void)
 	__flush_tlb_all();
 	init_task.kasan_depth = 0;
 
-	pr_info("Kernel address sanitizer initialized\n");
+	pr_info("KernelAddressSanitizer initialized\n");
 }

mm/kasan/kasan.c

@@ -518,7 +518,7 @@ static int kasan_mem_notifier(struct notifier_block *nb,
 
 static int __init kasan_memhotplug_init(void)
 {
-	pr_err("WARNING: KASan doesn't support memory hot-add\n");
+	pr_err("WARNING: KASAN doesn't support memory hot-add\n");
 	pr_err("Memory hot-add will be disabled\n");
 
 	hotplug_memory_notifier(kasan_mem_notifier, 0);

mm/kasan/report.c

@@ -91,7 +91,7 @@ static void print_error_description(struct kasan_access_info *info)
 		break;
 	}
 
-	pr_err("BUG: KASan: %s in %pS at addr %p\n",
+	pr_err("BUG: KASAN: %s in %pS at addr %p\n",
 		bug_type, (void *)info->ip,
 		info->access_addr);
 	pr_err("%s of size %zu by task %s/%d\n",
@@ -224,7 +224,7 @@ static void kasan_report_error(struct kasan_access_info *info)
 			bug_type = "user-memory-access";
 		else
 			bug_type = "wild-memory-access";
-		pr_err("BUG: KASan: %s on address %p\n",
+		pr_err("BUG: KASAN: %s on address %p\n",
 			bug_type, info->access_addr);
 		pr_err("%s of size %zu by task %s/%d\n",
 			info->is_write ? "Write" : "Read",