gpio: tqmx86: remove unneeded call to platform_set_drvdata()

[ Upstream commit 0a5e9306

 ]

This function call was found to be unnecessary as there is no equivalent
platform_get_drvdata() call to access the private data of the driver. Also,
the private data is defined in this driver, so there is no risk of it being
accessed outside of this driver file.

Reviewed-by: Alexandru Ardelean <alex@shruggie.ro>
Signed-off-by: Andrei Coardos <aboutphysycs@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Stable-dep-of: 9d6a811b

 ("gpio: tqmx86: introduce shadow register for GPIO output value")
Signed-off-by: Sasha Levin <sashal@kernel.org>