ARM: dts: msm: Update glink-lable string for wcnss

Currently on SSR APPS is havinh glink-lable as wcnss but
peripherals are having mpss for the same. The patch updates
glink-lable for wncss to "mpss".

Change-Id: Ib7a5f57aa8bb58b8f31682f52d29755129ccb41b
Signed-off-by: Hardik Arya <harya@codeaurora.org>