The wm8944 audio codec is not detected on the i2c bus:
[ 1.602411] qup_i2c qup_i2c.0: QUP: I2C status flags :0x1300c8, irq:187
[ 1.609003] qup_i2c qup_i2c.0: I2C slave addr:0x1a not connected
[ 1.614924] wm8944 0-001a: Failed to read ID register
[ 1.620235] wm8944: probe of 0-001a failed with error -107
Any idea what is wrong ? We are for the moment using version 15.08. Note that the other devices on the i2c bus are detected OK.