i3c: i3c-master-qcom-geni: Support for static address zero

This change is to support bus enumeration for slaves with static
address as zero. Also changes are made to link client ofnode for
slaves as part of attach dev callback.

Change-Id: Ia57882fb2d3ff87d8b832adf98e74ba66ba5e194
Signed-off-by: Subramanian Ananthanarayanan <skananth@codeaurora.org>