input: synaptics_i2c_rmi4: Turn off the reset gpio before freeing it.

Set the direction of reset GPIO to input before freeing it. This
eliminates any leakage current which may be there.

CRs-Fixed: 553847
Change-Id: Ib439de058326bf0d14d6e18b0a6198b4f682daf8
Signed-off-by: Sarada Prasanna Garnayak <c_sgarna@codeaurora.org>