gpio: atmel_pio4: add support for sama7g5 pio4 version with 5 banks

Add support for sama7g5 pinctrl variant, with 5 banks with a degraded
8 line only 5th bank.
Based on Linux Kernel implementation.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
1 file changed