ASoC: Update the Max value of integer controls.

When control value is queried framework is returning the
min value as zero even if min is negative.
This change will make sure that frame work will update
the max value in cases where min is negative.

Change-Id: Ibea7c500b11653674b2eab1ed8a21646dcca9996
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>