i2c-eg20t: add helper function for xfer check

Currently, there are the same code for xfer complete check processing.
So, I add helper function pch_i2c_wait_for_check_xfer.

Reported-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
1 file changed