drm/amdgpu/amdgpu_smu: convert to IP version checking

Use IP versions rather than asic_type to differentiate
IP version specific features.

v2: rebase
v3: switch some if statements to switch statements
v4: add yellow carp fix (Yifan)
v5: squash in fixes for YC and GS (Alex)

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>