drm/i915: Dual link needs Shutdown and Turn on packet for both ports
drm/i915: Dual link needs Shutdown and Turn on packet for both ports

For dual link MIPI panels, SHUTDOWN packet needs to send to both Ports
A & C during MIPI encoder disabling sequence. Similarly, TURN ON packet
to be sent to both Ports during MIPI encoder enabling sequence.

v2: Address review comments by Jani
    - Used a for loop instead of do-while loop.

v3: Used for_each_dsi_port macro instead of for loop

Signed-off-by: Gaurav K Singh <57d7670cd3ba6c6bdc1f4d87dfd208f6d77f3ca8@intel.com>
Signed-off-by: Shobhit Kumar <255d4827ed4cdfb7622c11dc83842a9187d70ef7@intel.com>
Reviewed-by: Jani Nikula <ba783f3beccaedfda693f41a15407d612a629408@intel.com>
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs