arm64: dt marvell: Fix AP806 system controller size

arm64: dt marvell: Fix AP806 system controller size

commit 9e7460fc325dad06d2066abdbc1f4dd49456f9a4 upstream.

Extend the container size to 0x2000 to include the gpio controller at
offset 0x1040.

While at it, add start address notation to the gpio node name to match
its 'offset' property.

Fixes: 63dac0f4924b ("arm64: dts: marvell: add gpio support for Armada
7K/8K")
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>