serial: sh-sci: Fix misplaced backport of "Fix late enablement of AUTORTS"

serial: sh-sci: Fix misplaced backport of "Fix late enablement of AUTORTS"

The upstream commit 5f76895e4c71 ("serial: sh-sci: Fix late enablement of
AUTORTS") inserted a new call to .set_mctrl().
However the backported version in stable (commit ad3faea03fdf ("serial:
sh-sci: Fix late enablement of AUTORTS")) does not insert it at the same
position.

This patch moves the added instructions back to where they should be
according to the upsteam patch.

Fixes: ad3faea03fdf ("serial: sh-sci: Fix late enablement of AUTORTS")
Signed-off-by: Guillaume Bertholon <guillaume.bertholon@ens.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>