When a block read returns an invalid length (0 or >I2C_SMBUS_BLOCK_MAX),
the current implementation leaves the bus hanging with SDA held low,
blocking all further I2C communication on the bus.

Add a dedicated IMX_I2C_STATE_READ_BLOCK_DATA_ABORT state and ISR
handler to properly terminate the transfer when an invalid block length
is detected:
  - Set TXAK and receive the next byte with NACK
  - On the following interrupt, generate a Stop condition
  - Read and discard the final byte
  - Report -EPROTO to the caller

This ensures the bus is released correctly and allows other devices on
the bus to continue operating normally.

Tested on i.MX 8M Plus with continuous block read operations.

Signed-off-by: LI Qingwu <redacted>
---
 drivers/i2c/busses/i2c-imx.c | 55 ++++++++++++++++++++++++++++++++++--
 1 file changed, 53 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 85f554044cf1..71457dbffb7a 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c

@@ -233,6 +233,7 @@ enum imx_i2c_state {
        IMX_I2C_STATE_READ_CONTINUE,
        IMX_I2C_STATE_READ_BLOCK_DATA,
        IMX_I2C_STATE_READ_BLOCK_DATA_LEN,
+       IMX_I2C_STATE_READ_BLOCK_DATA_ABORT