net: activity_stats: Stop using obsolete create_proc_read_entry api

Convert to use seq_read

Signed-off-by: Arve Hjønnevåg <arve@android.com>
mmc: block: Remove call to mmc_blk_set_blksize

It no longer exists.

Signed-off-by: Arve Hjønnevåg <arve@android.com>