imx: Rewrite display5 get_board_id() function to use dm_gpio_* API

The get_board_id() function was using the old gpio_* compatibility layer
to read HW and SW ID numbers encoded on the PCB board.

After this change the new dm_gpio* API is used for this purpose.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
1 file changed