radio-iris: Add ioctl commands to configure spur table

Provide interfaces to allow host to update the spur table
with spur frequencies specific to platforms.

CRs-Fixed: 352591
Change-Id: I139ac84a4a45578ebab63c26d7176666d47d3e2a
Signed-off-by: Anantha Krishnan <ananthk@codeaurora.org>