ARM: dts: imx: Fix I2C5 GPIO assignment on i.MX8M Plus DHCOM

Fix copy-paste error of the I2C5 bus recovery GPIO assignment,
the I2C5 GPIOs are on gpio3 instead of gpio5.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: uboot-imx <uboot-imx@nxp.com>