dmaengine: qcom: bam_dma: disable runtime pm on remote controlled

Remotely controlled BAM instance should not do any power management from
CPU side, as cpu can not reliably say if the BAM is busy or not.

Disable it for such instances.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>