Mt7621 SoC GPIO driver is a platform driver so we can directly use
'platform_get_irq' instead of 'irq_of_parse_and_map'.
Tested-by: NArınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: NSergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: NBartosz Golaszewski <brgl@bgdev.pl>