scsi: ufs: core: Simplify temperature exception event handling

scsi: ufs: core: Simplify temperature exception event handling

This commit simplifies the temperature exception event handling by removing
the ufshcd_temp_exception_event_handler() function and directly calling
ufs_hwmon_notify_event() in ufshcd_exception_event_handler().

The ufshcd_temp_exception_event_handler() function contained a placeholder
comment for platform vendors to add additional steps if required. However,
since its introduction a few years ago, no vendor has added any additional
steps. Therefore, the placeholder function is removed to streamline the
code.

Signed-off-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20250114181205.153760-1-avri.altman@wdc.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>