ARM: dts: msm: auto start Boot Log (BL) and disable its outbound channel

Boot Log is an inbound channel only, therefore disable outbound
channel. Also, automatically move channel to start state after
probe since BL client expects it.

CRs-Fixed: 2299820
Change-Id: Iedb3635181d794a75ca7152f77d95ded9f4abd53
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>