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PD#SWPL-137044 Problem: transfer timed out when spicc works at low speed(200K) Solution: TC is triggered by tx-fifo empty, but the last data is not yet transferred at this time. we have to wait the last data which is sending/receiving. Verify: C1 Change-Id: I7e0fca3fdf6ed6c3b40a8399564eae2cf6d3a9b0 Signed-off-by: Sunny Luo <sunny.luo@amlogic.com>