[Edgecore][as4630_54te] Update thermal threshold

[brandonchuang]

Update the thermal threshold values provided by hardware team. The unit of temperature is degree Celsius.

CPU Warring 70 Error 75 Shuntdown 80

LM75-4B Warring 65 Error 70 Shuntdown 75

LM75-4A Warring 65 Error 70 Shuntdown 75

LM75-48 Warring 65 Error 70 Shuntdown 75

PSU Warring 45 Error 50 Shuntdown 55

Signed-off-by: Brandon Chuang [email protected]