ARM: boot: dts: bcm2711: Fix HVS register range

[ Upstream commit 515415d3 ]

While the HVS has the same context memory size in the BCM2711 than in
the previous SoCs, the range allocated to the registers doubled and it
now takes 16k + 16k, compared to 8k + 16k before.

The KMS driver will use the whole context RAM though, eventually
resulting in a pointer dereference error when we access the higher half
of the context memory since it hasn't been mapped.

Fixes: 45643633 ("ARM: dts: bcm2711: Enable the display pipeline")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>