arm64: defconfig: enable clock controller, interconnect and pinctrl for QCS615

arm64: defconfig: enable clock controller, interconnect and pinctrl for QCS615

Enable clock controller, interconnect and pinctrl for Qualcomm QCS615
platform to boot to UART console.

The serial engine depends on GCC, interconnect, and pinctrl. It is
necessary to build them as built-in modules because the debug console
must be registered before userspace is launched. The primary reason for
this is that, for example, systemd opens /dev/console at launch (i.e.,
when the init process starts). Therefore, if we register the console after
this, we will not receive console output from systemd.

Signed-off-by: Lijuan Gao <quic_lijuang@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20241104-add_initial_support_for_qcs615-v5-5-9dde8d7b80b0@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>