arm64: defconfig: enable Qualcomm PCIe modem drivers

Enable the MHI PCI controller driver and the MHI NET and WWAN drivers
for Qualcomm based PCIe modems such as the ones found on the SC8280XP
Compute Reference Design (CRD) and Lenovo Thinkpad X13s.

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230115174450.11041-1-johan+linaro@kernel.org