synquacer: no operation is required in ppu_v0 shutdown handler

Created by: masahisak

On SynQuacer platform, whole system shutdown process is handled by the SYNQUACER_SYSTEM module with accessing the CRG hardware.

This commit modifies the ppu_v0_synquacer shutdown handler just to return FWK_SUCCESS, because no operation is required in each PPU shutdown handler.

Signed-off-by: Masahisa Kojima masahisa.kojima@linaro.org Change-Id: Ib76c07e940636ce7cf8e637533f898268f6b9464