msm: FM: Add snapshot of iris FM radio support

Files taken from the below kernel_msm-3.18 commits.
commit :fb9b44e7 ("radio: iris: Add snapshot of iris FM radio support")

Change-Id: Ib33d33ab8ccd587473c0104e6b48d93bbcfa6f01
Signed-off-by: himta ram <hram@codeaurora.org>
9 files changed