cpu/msr: update THERM_INTERRUPT MSR masks

BIT definition is as below:

0       High-Temperature Interrupt Enable
1       Low-Temperature Interrupt Enable
2       PROCHOT# Interrupt Enable
3       FORCEPR# Interrupt Enable
4       Critical Temperature Interrupt Enable
7:5     Reserved
14:8    Threshold #1 Value
15      Threshold #1 Interrupt Enable
22:16   Threshold #2 Value
23      Threshold #2 Interrupt Enable
24      Power Limit Notification Enable
63:25   Reserved

Signed-off-by: Alex Hung <alex.hung@canonical.com>
Acked-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Ivan Hu <ivan.hu@canonical.com>