arm: mach-msm: Kconfig: Enable bwmon for mdmfermium target

Add support to enable bwmon governor to allow runtime
bimc scaling.

Change-Id: I43339b838e51e9583afadeae8bfe46b4d753e71c
Signed-off-by: Venkatesh Yadav Abbarapu <quicvenkat@codeaurora.org>
Signed-off-by: Hanumath Prasad <hpprasad@codeaurora.org>