pit: Add more delay for proper power_on sequence
pit: Add more delay for proper power_on sequence

It makes delay between 3.3V_EN and PMIC_ON
So we are now 5V EN -> 2ms Delay -> 3.3V EN -> 2ms Delay -> PMC3_ACOK

BUG=chrome-os-partner:19305
BRANCH=none
TEST=Using osiloscope, See until PMC3_ACOK is far from P3.3V_AUX as 5ms

Change-Id: I65bfece28f55edf4f5640fe411bd57caaaaa5e1d
Reviewed-on: https://gerrit.chromium.org/gerrit/50449
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>
Commit-Queue: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>
Tested-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

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