arm64: dts: ipq6018: update the reserved-memory node

arm64: dts: ipq6018: update the reserved-memory node

Memory region reserved for the TZ is changed long back. Let's
update the same to align with the corret region. Its size also
increased to 4MB from 2MB.

Along with that, bump the Q6 region size to 85MB.

Fixes: 1e8277854b49 ("arm64: dts: Add ipq6018 SoC and CP01 board support")
Signed-off-by: Kathiravan T <kathirav@codeaurora.org>
Link: https://lore.kernel.org/r/1602690377-21304-1-git-send-email-kathirav@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>