pm_rpm: Require DMC loaded before testing runtime_pm for gen9+

Since we block runtime PM if DMC is not loaded, let's skip
the test.

v2: Use i915_dmc_info presence to detect dmc requirement
    instead of gen check as Chris suggested.
v3: Add missing \0 before using buf. (Chris)
v4: read only 14 bytes [0:13] so buf[len] is the 15th position.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

0 files changed, 0 insertions, 0 deletions