pci: misc/pci_endpoint_test: Add LX2 and S32 targets to the list of supported platforms.

commit 42240c8f0dd9b584f35bbce39d878894700df3a1 from
https://source.codeaurora.org/external/autobsps32/linux



This is the driver which creates the device used by the pcitest
application to communicate with the endpoint.

Issue: ALB-4548

Signed-off-by: Ionut Vicovan <Ionut.Vicovan@nxp.com>
Signed-off-by: Zhantao Tang <zhantao.tang@windriver.com>