[OpenMP] Add support for GOMP depobj

GOMP depobjs are represented as a two intptr_t array. The first
element is the base address of the dependency and the second element
is the flag indicating the type the depobj represents.

Differential Revision: https://reviews.llvm.org/D108790

GitOrigin-RevId: 258e27aae1354e0e82cf328fc55b1c7eea932290
5 files changed