udf: Fix meaning of ENTITYID_FLAGS_* macros to be really bitwise-or flags

Currently ENTITYID_FLAGS_* macros definitions are written as hex numbers
but their meaning is not bitwise-or flags. But rather bit position. This is
unusual and could be misleading. So change meaning of ENTITYID_FLAGS_*
macros definitions to be really bitwise-or flags.

Link: https://lore.kernel.org/r/20200112221353.29711-1-pali.rohar@gmail.comSigned-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/udf/ecma_167.h

@@ -95,8 +95,8 @@ struct regid {
 } __packed;
 
 /* Flags (ECMA 167r3 1/7.4.1) */
-#define ENTITYID_FLAGS_DIRTY		0x00
-#define ENTITYID_FLAGS_PROTECTED	0x01
+#define ENTITYID_FLAGS_DIRTY		0x01
+#define ENTITYID_FLAGS_PROTECTED	0x02
 
 /* Volume Structure Descriptor (ECMA 167r3 2/9.1) */
 #define VSD_STD_ID_LEN			5

fs/udf/super.c

@@ -773,7 +773,7 @@ static int udf_verify_domain_identifier(struct super_block *sb,
 		udf_warn(sb, "Not OSTA UDF compliant %s descriptor.\n", dname);
 		goto force_ro;
 	}
-	if (ident->flags & (1 << ENTITYID_FLAGS_DIRTY)) {
+	if (ident->flags & ENTITYID_FLAGS_DIRTY) {
 		udf_warn(sb, "Possibly not OSTA UDF compliant %s descriptor.\n",
 			 dname);
 		goto force_ro;