sepolicy allow fingerprint hal to read mfg_data

declares new device context for mfg_data_block_device
give fp HAL permission to read/write/open
give fp HAL permission to search block_device dir

Bug: 189135413
Test: sideload calibration in enforcing mode.
Change-Id: I19e0cd13fc452b42c3f35772c4bafd433dbcc8b1
4 files changed