defconfig: fsm9900: enable the pcie on fsm9900

Enable the PCIE kernel config for fsm9900 target.

Change-Id: I411a1d6ebe3ae39f2ef1ccd9f493cdb8de5cad9b
Acked-by: Kaushik Sikdar <ksikdar@qti.qualcomm.com>
Signed-off-by: Venkatesh Yadav Abbarapu <quicvenkat@codeaurora.org>