ARM: dts: msm: Add Rx buffer nodes for IPA HW on MSM8953

Add dtsi node for WAN Rx size and LAN Rx size.
Assign a value 192 to wan-rx-size and lan-rx-size
nodes to reduce the IPA memory usage in MSM8953.

Change-Id: I40bd00f824693a10dd1356b9aef13992603e842b
Acked-by: Chaitanya Pratapa <cpratapa@qualcomm.com>
Signed-off-by: Utkarsh Saxena <usaxena@codeaurora.org>