[flang] Support PDT KIND parameters in later parameter kind expressions

Fortran allows an earlier-declared KIND type parameter of a parameterized
derived type to be used in the constant expression defining the integer
kind of a later type parameter.

  TYPE :: T(K,L)
    INTEGER, KIND :: K
    INTEGER(K), LEN :: L
    ...
  END TYPE

Differential Revision: https://reviews.llvm.org/D159044https://reviews.llvm.org/D159044