msm: camera: Support Linux_32 bit platform

Add support for Linux 32 bit platform compilation. As part of
this we have made below two changes.
- 64 bit division is giving compilation issue on 32 bit Linux.
  We added utility function for division operation which is platform
  independent.
- Changed io_address to the type dma_addr_t. dma_addr_t is a platform
  independent type.

Change-Id: I9331fdca09d16faed570ada9197cdea33e68f209
Signed-off-by: Alok Pandey <akumarpa@codeaurora.org>