serial: Properly spell out the structure member names of serial_driver

serial: Properly spell out the structure member names of serial_driver

Properly spell out the whole structure member names when an initialized
varible is instantiated from the struct serial_driver. In case the
structure definition for struct serial_driver undergoes reordering,
there will be no impact on variables defined based on this structure.

Signed-off-by: Marek Vasut <[email protected]>
Cc: Marek Vasut <[email protected]>
Cc: Tom Rini <[email protected]>
Cc: Anatolij Gustschin <[email protected]>
Cc: Stefan Roese <[email protected]>
Cc: Mike Frysinger <[email protected]>
Cc: C Nauman <[email protected]>
Cc: Minkyu Kang <[email protected]>
Cc: Michal Simek <[email protected]>