Bool to int and int to bool also work for unsigned int.

Change-Id: I31669d8754a718096381609d13c2e9668599efe5
Reviewed-on: https://swiftshader-review.googlesource.com/4070Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Nicolas Capens <capn@google.com>