pixel-sepolicy: init_dpm.sh to read/write on custom_ab_block_device

DPM images can have "custom_ab_block_device" label. Thus, we should
allow init_dpm.sh to read/write on custom_ab_block_device.

Bug: 283725554

Change-Id: I37e680373f2194e5a858eb32e810461b1c0091dd
Signed-off-by: Bryan Bong Gyoune Kim <bgkim@google.com>
1 file changed