phy: freescale: fsl-samsung-hdmi: Fix 64-by-32 division cocci warnings

phy: freescale: fsl-samsung-hdmi: Fix 64-by-32 division cocci warnings

The Kernel test robot returns the following warning:
 do_div() does a 64-by-32 division, please consider using div64_ul instead.

To prevent the 64-by-32 divsion, consolidate both the multiplication
and the do_div into one line which explicitly uses u64 sizes.

Fixes: 1951dbb41d1d ("phy: freescale: fsl-samsung-hdmi: Support dynamic integer")
Signed-off-by: Adam Ford <aford173@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202412091243.fSObwwPi-lkp@intel.com/
Link: https://lore.kernel.org/r/20241215220555.99113-1-aford173@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>