On kernel-6.6, QMI feature used by coresight needs to be abstracted
as a device. Add modem-qmi dev node for modem_etm0 to support QMI
feature.
Change-Id: I2b56be596208f88353e5cf1a89751f7760c89851
Signed-off-by: Xiaoqi Zhuang <quic_xiaozhua@quicinc.com>