[dts] [PATCH V3] tests/TestSuite_cbdma:fixed session error

[Tu, Lijuan]

> v1:fixed session error
> v2:fixed session error and close new session v3:fixed session error and close
> new session at the end of each case
> 
> 
> Signed-off-by: xizhan4x <xix.zhang at intel.com>

Applied