mb/google/dedede: Update the SLP_Sx assertion widths and PwrCycDur

mb/google/dedede: Update the SLP_Sx assertion widths and PwrCycDur

This patch updates the SLP_Sx assertion width and power cycle duration
for the dedede platforms.

Power cycle duration:
With default value,
	S0->S5 -> [ ~4.2 seconds delay ] -> S5->S0

With value set to 1,
	S0->S5 -> [ ~1.2 seconds delay ] -> S5->S0

BUG=b:159104150
TEST=Verified that the power cycle duration is ~1.2s with global
     reset on waddledoo.

Change-Id: I7079cbd564288b5d5b69e07661434439365063d3
Signed-off-by: V Sowmya <v.sowmya@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43792
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aamir Bohra <aamir.bohra@intel.com>
Reviewed-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-by: Ronak Kanabar <ronak.kanabar@intel.com>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>