ARM: dts: msm: Fix BIMC BW MON version on 8909

The version 2 of the BIMC BWMON HW doesn't reset the
counter to 0 when it hits the threshold. It also has
support for an overflow status register.

8909 has version2 of BIMC BW monitor. Correct it.

Change-Id: I787eafe4b26c0d3e65a73b08a211d9556b2bf5ee
Signed-off-by: Arun KS <arunks@codeaurora.org>
Signed-off-by: Hanumath Prasad <hpprasad@codeaurora.org>
Suggested-by: Saravana Kannan <skannan@codeaurora.org>