ASoC: wcd: Donot return IRQ_NONE

If we return false from wcd9xxx_spmi_lock_sleep
it results in not servicing interrupt due to which
headset insertion/removal event during suspend are missed.

CRs-Fixed: 705433
Change-Id: Ie606bf9195f9d899b00abc771849b9eb4b2d8d3c
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>