[openmp][amdgpu] Add DynamicLdsSize to AMDGPUImplicitArgsTy (#65325)

#65273 "hidden_dynamic_lds_size" argument will be added in the reserved
section at offset 120 of the implicit argument layout
Add DynamicLdsSize to AMDGPUImplicitArgsTy struct at offset 120 and fill
the dynamic LDS size before kernel launch.

GitOrigin-RevId: 1637c0792550f70e4b2ef42b3d08aa91dd27f4a9
2 files changed