ASoC: wcd9xxx :Modify detection of Euro Headset

Detect the cable as EU Headset only if below conditions met.
1.Plug types for 1st, 2nd, 4th are consistent and equal to HEADSET.
2.Delta b/w 1st, 2nd, 4th is not more than WCD9XXX_CS_MEAS_DELTA_MAX_MV.
3.Plug type of the 3rd measurement is HEADPHONE.
4.Don't consider the status of HPHL.

Change-Id: Iee5f05a360599295e75496bec87b595709ba5a6c
Signed-off-by: Yeleswarapu, Nagaradhesh <nagaradh@codeaurora.org>