linux-phytec-fsl

MLK-11911-7 mxc IPUv3: common: Convert macro tri_cur_buf_mask/shift to function

This patch converts macro tri_cur_buf_mask/shift to function to address the
following issue reported by Coverity:
Operands don't affect result (CONSTANT_EXPRESSION_RESULT)
result_independent_of_operands: dma_chan * 2 != 63 is always true regardless of
the values of its operands. This occurs as the logical first operand of '?:'.

Signed-off-by: Liu Ying <Ying.Liu@freescale.com>