i2c: fsl-lpi2c: read lpi2c fifo size in probe()
The lpi2c fifo size is a read only parameter resides Parameter Register. It's better to read lpi2c tx/rx fifo size in probe() other than just define a macro for it. Signed-off-by: Gao Pan <pandy.gao@nxp.com> Reviewed-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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