dt-bindings: clock: qcom,ipq9574-gcc: Add maintainer

Add Bjorn andersson to the maintainer's list.

Signed-off-by: Devi Priya <quic_devipriy@quicinc.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230425084010.15581-3-quic_devipriy@quicinc.com