interconnect: qcom: Update the number of DDR channels for Holi

DDR interface is (2x16), so update the number of channels to "2"
and bus width to "4".

Change-Id: I2e6c8f3ebe8cce38412dbcb5fe9032353d28b597
Signed-off-by: Odelu Kukatla <okukatla@codeaurora.org>