ARM: dts: berlin: add the BG2 GPIO nodes

The Berlin BG2 has 32 GPIOs in SoC power domain and 16 in the SM one.
Only the first 8 SM GPIOs have interrupt support.

Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
ARM: dts: berlin: add the BG2CD GPIO nodes

The Berlin BG2CD has 32 GPIOs in SoC power domain and 16 in the SM one.

Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>