ARM: dts: msm: disable cnss node for SA8155 IOT target

BugLink: https://bugs.launchpad.net/bugs/1945470



SA8155 IOT does not have requirement for wifi snoc, so disable
the cnss-qca-converged wlan node.

Change-Id: Idde47e4d37080e559363c5a222d1c4bec0bf3006
CRs-Fixed: 3027985
Signed-off-by: Vijay Navnath Kamble <vkamble@codeaurora.org>
(cherry picked from commit ced4cedab725c0e2509c09edbc17ac6253016915)
Signed-off-by: Shrirang Bagul <shrirang.bagul@canonical.com>