ASoC: wcd: correct the cross connection check condition

When there is cross connection present, schmitt
HPHL/HPHR triggers bits are set to 0. While reading
this register modify the check condition to be same
as the hardware generated result.

CRs-Fixed: 642944
Change-Id: I82225cf9a820eeace0c45696c167732b3d0e4a86
Signed-off-by: Simmi Pateriya <simmip@codeaurora.org>