interconnect: qcom: Fix the link error on 32bit architecture

Update the bcm_div function to use do_div() to prevent compiler
from generating undefined reference to `__aeabi_uldivmod' warnings
on 32bit architecture.

Change-Id: Iba37b5f286e76b0ce903b6e0e0344e9659b0004f
Signed-off-by: Naveen Yadav <naveenky@codeaurora.org>