ARM: dts: msm: Add pipe-ownership and product-code for slimbus in 8974

To setup data channels from application processor with at least one
endpoint in memory, slimbus driver requires information about pipes
owned by the apps processor, and the product-code of the controller.
Add this information to Device-Tree for MSM slimbus controller on
8974.

Change-Id: Ice45907c784f532b727868ce0f14a94e08313eeb
Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>