wcnss: updating driver to use wcnss_reset_fiq api

Updating wcnss platform driver to use safer api wcnss_reset_fiq
instead of older api wcnss_reset_intr and removing the deprecated
api.

Change-Id: Ica6d91e6b62e03d83afddd521e78bf90e000ced7
CRs-Fixed: 841553
Signed-off-by: Siddharth Bhal <sbhal@codeaurora.org>