common: Add wcd dsp device node to policy

The wcd dsp device node is used by the audio HAL sotware to
communicate with the codec DSP. Change adds this device node
to security policy so that audioserver process can access
this device node.

CRs-Fixed: 1063084
Change-Id: I10693ecd23fbc989a3a7940cbf7190b7740a8e91
1 file changed