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.com


Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>