scsi: ufs: exynos: Correct sync pattern mask timing comment

Fix the comment for SYNC_LEN_G2 in exynos_ufs_config_sync_pattern_mask().
The actual value is 40us, not 44us, matching the configured mask timing.
This change improves code clarity and avoids potential confusion for
readers and maintainers.

No functional changes.

Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Message-ID: <20250907202752.3613183-1-alok.a.tiwari@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>