pci: imx: request gpio before use
Before use GPIO, we need to request gpio first. Free gpio after use. Signed-off-by: NPeng Fan <peng.fan@nxp.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Reviewed-by: NStefano Babic <ssbabic@denx.de>
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