ARM: dts: msm: Disable PCIe L1 and L1ss for msm8996 CV2X

Disable L1 and L1ss PCIe low power modes for msm8996 CV2X
since it causes problems with WLAN (RC0) and not supported
by Neutrino Ethernet (RC1).

Change-Id: I7d9358a2cb5921f5e5d5da858faec553197063ee
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>