esoc: Bring mdm9x55 in sync with mdm9x45 functionality

Some options available for mdm9x45 esocs were missing from
the mdm9x55 setup hardware function. Add those to bring them
in sync. The way a power down is performed on mdm9x55 is also
changed to be similar to mdm9x45.

Change-Id: I14b0e77d08cb319581cfd02304eba8351c378306
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>