volteer: Delay assertion of SYS_PWROK
volteer: Delay assertion of SYS_PWROK

Delay the assertion of the PCH_SYS_PWROK signal by 50ms after assertion
of PG_EC_ALL_SYS_PWRGD is detected.

BUG=b:144478941, b:144867384
BRANCH=none
TEST=make buildall
TEST=instrument Ice Lake power module, confirm 50ms delay from
PG_EC_ALL_SYS_PWRGD to PCH_SYS_PWROK

Change-Id: Ib6a04cc5e1b27f3c53b5d8b00da7f0653225b0e4
Signed-off-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1956148
Reviewed-by: Vijay P Hiremath <006c712879a3af08bfdb5c2b8491a8b2d5fd73cd@intel.com>
Reviewed-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>
Reviewed-by: Abe Levkoy <2e1ad7039298f93262cf06bbb457275fb3e2ecb5@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec