dmaengine: Refactor dmaengine_check_align() to be bit operations only

There is no need to have branch and temporary variable in the function.
Simple convert it to be a set of bit and arithmetic operations.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200226101842.29426-1-andriy.shevchenko@linux.intel.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>