arm64: dts: qcom: ipq9574: Update the size of GICC & GICV regions

Update the size of GICC and GICV regions to 8kB as the GICC_DIR & GICV_DIR
registers lie in the second 4kB region. Also, add target CPU encoding.

Fixes: 97cb36ff ("arm64: dts: qcom: Add ipq9574 SoC and AL02 board support")
Signed-off-by: Devi Priya <quic_devipriy@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230425084010.15581-2-quic_devipriy@quicinc.com