NFC: Fix for core init cmd send failure

Due to delay of ~3 sec between core reset response
and core init cmd, i2c send fails as NFC controller
goes to deep sleep state if its idle for ~1sec.

Delay caused due to logs in driver probe sequence.

Delay is added after every gpio state change to
ensure, modified value is taken into consideration
and unnecessary delays are removed.

Change-Id: I4c6e8f867f641d6648139206244d67bb556e0099
Signed-off-by: Gaurav Singhal <gsinghal@codeaurora.org>
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>