Merge branch 'move-est-lock-and-est-structure-to-struct-stmmac_priv'

Xiaolei Wang says:

Move EST lock and EST structure to struct stmmac_priv

1. Pulling the mutex protecting the EST structure out to avoid
    clearing it during reinit/memset of the EST structure,and
    reacquire the mutex lock when doing this initialization.

2. Moving the EST structure to a more logical location

Signed-off-by: Jakub Kicinski <>