spi: topcliff-pch: Transform noisy message to dev_vdbg
If during a SPI transfer with len larger than PCH_MAX_FIFO_DEPTH and the IRQ handler happens to be called when the transmit FIFO is already empty, and SPSR_FI_BIT is set consequently, the message "spi_master spi32766: pch_spi_handler_sub : Transfer is not completed" is spammed to the systemlog, because tx_index has already increased further due to the next bytes to be written. This case is uncritical as new bytes have already been written. Signed-off-by: NAlexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: NMark Brown <broonie@linaro.org>
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