This data will be needed for dpm on newer asics.

v2: fix typo in rebase
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This adds dpm support for rv6xx asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching

Set radeon.dpm=1 to enable.

v2: remove duplicate line
v3: fix thermal interrupt check noticed by Jerome
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>

These are shared by rs780/rs880, rv6xx, and newer chips.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>