USB: documentation: flags on usb-storage versus UAS

			Flags is a set of characters, each corresponding

			to a common usb-storage quirk flag as follows:

				a = SANE_SENSE (collect more than 18 bytes

					of sense data);

					of sense data, not on uas);

				b = BAD_SENSE (don't collect more than 18

					bytes of sense data);

					bytes of sense data, not on uas);

				c = FIX_CAPACITY (decrease the reported

					device capacity by one sector);

				d = NO_READ_DISC_INFO (don't use

					READ_DISC_INFO command);

					READ_DISC_INFO command, not on uas);

				e = NO_READ_CAPACITY_16 (don't use

					READ_CAPACITY_16 command);

				f = NO_REPORT_OPCODES (don't use report opcodes

				j = NO_REPORT_LUNS (don't use report luns

					command, uas only);

				l = NOT_LOCKABLE (don't try to lock and

					unlock ejectable media);

					unlock ejectable media, not on uas);

				m = MAX_SECTORS_64 (don't transfer more

					than 64 sectors = 32 KB at a time);

					than 64 sectors = 32 KB at a time,

					not on uas);

				n = INITIAL_READ10 (force a retry of the

					initial READ(10) command);

					initial READ(10) command, not on uas);

				o = CAPACITY_OK (accept the capacity

					reported by the device);

					reported by the device, not on uas);

				p = WRITE_CACHE (the device cache is ON

					by default);

					by default, not on uas);

				r = IGNORE_RESIDUE (the device reports

					bogus residue values);

					bogus residue values, not on uas);

				s = SINGLE_LUN (the device has only one

					Logical Unit);

				t = NO_ATA_1X (don't allow ATA(12) and ATA(16)

				w = NO_WP_DETECT (don't test whether the

					medium is write-protected).

				y = ALWAYS_SYNC (issue a SYNCHRONIZE_CACHE

					even if the device claims no cache)

					even if the device claims no cache,

					not on uas)

			Example: quirks=0419:aaf5:rl,0421:0433:rc

	user_debug=	[KNL,ARM]