For Stoney platform, Memory gating is disabled.i.e SRAM Banks
won't be turned off. By Default, SRAM Bank state set to ON.
Added condition checks to skip SRAM Bank state set logic for
Stoney platform.
Acked-by: NMark Brown <broonie@kernel.org>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NVijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NMark Brown <broonie@kernel.org>