ARM: socfpga: Drop last use of socfpga_reset_manager

ARM: socfpga: Drop last use of socfpga_reset_manager

This particular chunk of code was not updated, likely due to the order
in which the patches were posted and applied. Fix this missing part.

Fixes: bb25aca13433 ("arm: socfpga: Convert reset manager from struct to defines")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>