Backport below changes for I2C QUP driver from v4.17:
0668bc44a426 i2c: qup: fix copyrights and update to SPDX identifier
7239872fb340 i2c: qup: fixed releasing dma without flush operation completion
eb422b539c1f i2c: qup: minor code reorganization for use_dma
6d5f37f166bb i2c: qup: remove redundant variables for BAM SG count
c5adc0fa63a9 i2c: qup: schedule EOT and FLUSH tags at the end of transfer
7e6c35fe602d i2c: qup: fix the transfer length for BAM RX EOT FLUSH tags
3f450d3eea14 i2c: qup: proper error handling for i2c error in BAM mode
08f15963bc75 i2c: qup: use the complete transfer length to choose DMA mode
ecb6e1e5f435 i2c: qup: change completion timeout according to transfer length
6f2f0f6465ac i2c: qup: fix buffer overflow for multiple msg of maximum xfer len
f7714b4e451b i2c: qup: send NACK for last read sub transfers
fbfab1ab0658 i2c: qup: reorganization of driver code to remove polling for qup v1
7545c7dba169 i2c: qup: reorganization of driver code to remove polling for qup v2
This fixes various I2C issues observed on AP120C-AC board equipped with
Atmel/Microchip AT97SC3205T TPM module.
Tested-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
