The flash_area_erase is replaced with flash_area_flatten that
is also able to erase/scramble devices that do not require
explicit call to erase procedure before write.
Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
This tests functions accessible from blob_io_flash via `bt_mesh_blob_io`
object. Whole partition of slot1 is filled with test data using
flash_map API and then read using blob_io_flash, by reading it as blocks
and chunks. `chunk_wr` is tested my writing sample data of size of slot1
partition and checked if each chunk is written correctly, and if whole
partition is filled with correct data at the end. Both of these test
use `bt_mesh_blob_io_flash_init` and `io_open` to prepare stream and
call `block_start` at every new block to check if flash is prepared
correctly.
Signed-off-by: Krzysztof Kopyściński <krzysztof.kopyscinski@codecoup.pl>
