arm64: defconfig: Enable PCIe as DLKM for SA8150/SA8195 automotive

PCIe (peripheral component interconnect express) is an
interface standard for connecting high-speed components.
This enables PCIe as DLKM for SM8150/SA8195 automotive.

Change-Id: I5234b9618e6d24230b1fcc86167265d51e0787fe
Signed-off-by: Nitesh Gupta <nitegupt@codeaurora.org>
Signed-off-by: Hans Chang <hansc@codeaurora.org>