spi: spi-geni-qcom: Set SPI gpios to sleep state in probe

Set SPI gpios to sleep state during probe so that these gpios
will be set to sleep state at boot up.

Change-Id: Icbc6424986e663339fd85b458b07cce33258b171
Signed-off-by: Prudhvi Yarlagadda <pyarlaga@codeaurora.org>