pinctrl: msm: remove pri_mi2s_ws pinctrl group

For MSMTHULIUM Remove pri_mi2s_ws pinctrl group as there
is no separate group needed for Primary MI2S WS line.
Instead, update the pri_mi2s pinctrl group to add the WS
line as well.

Change-Id: I9787b30670bb03769bc37cb77998f310a4860c83
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>