ARM: dts: msm: Add cnss dts for dual hst in sa8195 LV GVM

In order to support dual hastings running on sa8195
LV GVM, enable pcie2 and add cnss node for the second
WLAN chipset.

Change-Id: Ib746309ce44103f006127d369aed342befa405ec
Signed-off-by: Chaoli Zhou <zchaoli@codeaurora.org>