ARM: dts: msm: BIMC for 8974 class devices

Map memory for tools to access BIMC facilities.

Change-Id: I4f3286f4aae47e181d7cde3f303a4ca995b5da52
Acked-by: rahul ramasubramanian <rahulr@qti.qualcomm.com>
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>