GLINK PKT provides a userspace interface to RPMSG GLINK through
character device node. Add the nodes and corresponding channel
devices to enable GLINK communication from userspace.
Change-Id: Ie880b3806843fcf57fbb2f77a2d77e24ee7359b6
Signed-off-by: Pranav Mahesh Phansalkar <quic_pphansal@quicinc.com>