coresight-tpdm: update patt_mask and patt_val node for cmb

Current patt_mask and patt_val nodes for cmb are split
between LSB and MSB. Modify the nodes in order for it to be
consistent across different datasets.

Change-Id: I0202a20d39a10f1a22e4d3007d82ce843b6d834a
Signed-off-by: Satyajit Desai <sadesai@codeaurora.org>