gpio: Fix imx driver edge selection when configuring by port
gpio: Fix imx driver edge selection when configuring by port

Fixes a copy-paste error found by Coverity.

Coverity-CID: 186028

Signed-off-by: Maureen Helm <87a696db5547fa477bda9f9e0f00013c839c14d3@nxp.com>

galak/zephyr,nashif/zephyr,mbolivar/zephyr,kraj/zephyr,punitvara/zephyr,explora26/zephyr,galak/zephyr,mbolivar/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,GiulianoFranchetto/zephyr,punitvara/zephyr,ldts/zephyr,Vudentz/zephyr,nashif/zephyr,kraj/zephyr,finikorg/zephyr,mbolivar/zephyr,Vudentz/zephyr,nashif/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,zephyriot/zephyr,punitvara/zephyr,zephyrproject-rtos/zephyr,zephyriot/zephyr,zephyrproject-rtos/zephyr,zephyriot/zephyr,explora26/zephyr,zephyriot/zephyr,finikorg/zephyr,kraj/zephyr,Vudentz/zephyr,explora26/zephyr,explora26/zephyr,finikorg/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,zephyriot/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,finikorg/zephyr,ldts/zephyr,galak/zephyr,nashif/zephyr,GiulianoFranchetto/zephyr,finikorg/zephyr,kraj/zephyr,ldts/zephyr,Vudentz/zephyr,punitvara/zephyr,ldts/zephyr,kraj/zephyr,explora26/zephyr,punitvara/zephyr,Vudentz/zephyr,mbolivar/zephyr,mbolivar/zephyr,ldts/zephyr