slim_msm: Allow remote management of pipes for MSM slimbus BAM

Slimbus BAM may not be locally owned and/or controlled. In that case,
a remote processor (e.g. LPASS) configures BAM and sets security
configurations for the BAM pipes.
Allow driver to choose whether BAM is locally or remotely managed.

Change-Id: I10741cb394428f525c1633e707e88e699aa63cf5
Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>