misc: kxtj9 change accelerometer start up time

There's reported test show that the kxtj9 can't bootup in 20ms.
Change the msleep time to 80ms as vendor suggested.

CRs-fixed: 523240
Change-Id: Iaea2c098eb52334c68b030f6a7077babedd0bcf7
Signed-off-by: Oliver Wang <mengmeng@codeaurora.org>