mb/google/poppy/variants/nami: Add delay to enable_gpio during Elan power on

During measurement of signals during Elan touchscreen power on, saw
that the enable_gpio delay was not sufficient as there is a +1.5 ms
delay during power on.  Adding more delay to take this into account.

TEST=probe power on signals to ensure meet timing requirements

Change-Id: Id661a202188a97aef97514ebecd0be6fc022d21e
Signed-off-by: Shelley Chen <shchen@google.com>
Reviewed-on: https://review.coreboot.org/26725
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
1 file changed