gpio: tegra: Enable pinctrl_request_gpio

gpio: tegra: Enable pinctrl_request_gpio

Call pinctrl_request_gpio when gpio is requested
by tegra_gpio_request

Bug 200033491

Change-Id: I0e0a129adf51775edaa5887b11188f0ed1776e0e
Signed-off-by: shravanid <shravanid@nvidia.com>
Reviewed-on: http://git-master/r/404352
(cherry picked from commit 7ba0a34569bff25730406a4c54967e4e2c470cbc)
Reviewed-on: http://git-master/r/498325
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Tested-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>
Reviewed-by: Matthew Pedro <mapedro@nvidia.com>