ASoC: wcd9xxx: correct hph_status handling

mbhc hph_status status is assigned to 0, if extension cable
feature is enabled.Due to this OCP status bits are cleared
as a result OCP interrupts are masked which were stopping
OCP trigger. So donot set status to 0, instead set it appropriately.

CRs-Fixed: 552734
Change-Id: Ic3356e2f9411954939f28bc46c3b8bfda4cfd34f
Signed-off-by: Yeleswarapu, Nagaradhesh <nagaradh@codeaurora.org>