ARM: dts: msm: fix pcie1 bar space overrun

The size of bar space for pcie1 may cause overrun of 8 Meg PCIE
AXI slave space. Fix its size to make it within the 8 Meg space.

Change-Id: Ib2472a9379200dea8dcaad831d3b100c87597c6d
Acked-by: Chemin Hsieh <cheminh@qti.qualcomm.com>
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>