Fix ranges of parameter declarations involving inf

[gjcoram]

This parameter declaration is illegal:

parameter real Trise = 0.0 from [-inf:inf]; // Difference sim. temp and device temp [C deg]

The square brackets [] mean that the endpoints of the range are allowed, but inf is not a valid value. One is only allowed to use inf with parentheses:

parameter real Trise = 0.0 from (-inf:inf); // Difference sim. temp and device temp [C deg]

This issue occurs multiple times for many different parameters.