drivers: i2c_rtio: Use flexcomm interface to manage interrupts

Some NXP SoC's have a FlexComm interface that manages the
interrupts.

Applying 482e39ea9556f53adbb7f67d0d0da3d17bbbae90 on RTIO-version.

Authored-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
Signed-off-by: Luis Ubieda <luisf@croxel.com>
(cherry picked from commit 797772fc)