cnss2: Add daemon_support dts option for QCA6390

For platforms where cnss_daemon is not needed, number of qmi clients
will be 2 and WLAN FW will then wait for cnss_daemon to be connected
and CNSS2 will timeout waiting for FW ready. Thus add a dts option
to enable daemon_support.

Change-Id: I94fc2cc17dfc11c2bc59751af05cc55a572a5d4f
Signed-off-by: Mohammed Siddiq <msiddiq@codeaurora.org>