The BIS storage interface is now initialized by utilsInitializeResources() via bisStorageInitialize(). It takes care of mounting all eMMC FAT partitions in read-only mode, making it possible for the rest of the code to interact with them at any time without having to manually mount them beforehand.
Other changes include:
* bis_storage: add bisStorageExit().
* bis_storage: add bisStorageGetGptPartitionNameByBisPartitionId(), bisStorageGetSystemInitializerPartitionNameByBisPartitionId() and bisStorageGetMountNameByBisPartitionId() helpers.
* bis_storage: change bisStorageMountPartition(), bisStorageUnmountPartition() and bisStorageUnmountAllPartitions() to static functions.
* bis_storage: mount FAT partitions with FatFs by using drive numbers instead of arbitrary strings.
* cert: update code to reflect BIS storage interface changes.
* defines: add BIS_FAT_PARTITION_COUNT macro.
* fatfs/ffconf: use BIS_FAT_PARTITION_COUNT macro as the value for the FF_VOLUMES macro.
* fatfs/ffconf: disable arbitrary string support for volume IDs.
* nxdt_devoptab: increase concurrent mounted device count to 8.
* nxdt_utils: add missing underscores to anonymous variables in SCOPED_LOCK and SCOPED_TRY_LOCK macros.
* nxdt_utils: take care of BIS storage interface (de)initialization.
* poc: update code to reflect BIS storage interface changes.
* tik: update code to reflect BIS storage interface changes.
Makes it possible to browse eMMC partitions and dump data from them.
Since we're manually parsing FAT partitions, reading files protected by the FS sysmodule at runtime is possible.
Takes care of retrieving a FsStorage object for any FAT eMMC BIS partition, mounting it via FatFs and creating a virtual devoptab device that can be used to carry out FS operations. All write operations have been stubbed, disabled or ifdef'd out of the code.
Other changes include:
* cert: update code to use the new BIS storage interface.
* defines: remove BIS_SYSTEM_PARTITION_MOUNT_NAME macro.
* devoptab: slightly improve macros.
* devoptab: add operation table for FatFs devices.
* devoptab: add rodev_fstat().
* devoptab: add devoptabMountFatFsDevice().
* fatfs: update diskio code to use the new BIS storage interface.
* fatfs: update configuration.
* save: update code to use regular C I/O calls instead of FatFs calls.
* tik: update code to use the new BIS storage interface.
* utils: remove eMMC BIS System partition (un)mount code.
