ARM: dts: msm: Register cnss in apq8084 CDP and MTP

Register cnss as esoc client in apq8084 board dts file,
so that cnss driver can get modem name from device tree
using esoc APIs.

CRs-Fixed: 625649
Change-Id: I33223fde23993e4d908454e41395f854acfb9783
Signed-off-by: Yuanyuan Liu <yuanliu@codeaurora.org>