net/mlx5: Prefix temperature event bitmap with '0x' for clarity

Prepend '0x' to the sensor bitmap in the warning message to clearly
indicate that the bitmap is in hexadecimal format.

Signed-off-by: Shahar Shitrit <shshitrit@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Link: https://patch.msgid.link/20250213094641.226501-3-tariqt@nvidia.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>