[ot] hw/opentitan: ot_i2c: update TX_THRESHOLD interrupt on target I2C recv

This interrupt should be cleared if the TX FIFO level falls below the
threshold, but this is not checked on target mode I2C recv.

Signed-off-by: Alice Ziuziakowska <[email protected]>

Author: ziuziakowska

hw/opentitan/ot_i2c.c

@@ -1220,7 +1220,10 @@ static uint8_t ot_i2c_target_recv(I2CSlave *target)
         return 0;
     }
 
+    /* pop FIFO and check threshold. */
     data = fifo8_pop(&s->target_tx_fifo);
+    ot_i2c_irq_set_state(s, TX_THRESHOLD, ot_i2c_tx_threshold_intr(s));
+
     trace_ot_i2c_target_recv(s->ot_id, fifo8_num_used(&s->target_tx_fifo),
                              data);
     return data;