ARM: dts: msm: Add dt entries for kona stub

Add device tree entries for kona stub sound card.
Add kona audio device tree entries.
Add documentation for kona stub sound card.

CRs-Fixed: 2340236
Change-Id: I89f7fa29ac5e7f169519868a2f344c42d9407a8a
Signed-off-by: Vignesh Kulothungan <vigneshk@codeaurora.org>
3 files changed