ASoc: wcd-mbhc: correct handling of electrical interrupts

When 5 pole headset is removed, electrical interrupts are
disabled but intr_status bit is not set properly. Due to
which interrupts are not enabled when extension cable is
connected. So, corrrect handling on electrical interrupts.

CRs-Fixed: 1111164
Change-Id: I6d1c667ae6c44e7f0767df3e5450e99614717cc6
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>