staging: greybus: uart.c: Remove include linux/serial.h

$ make includecheck | grep staging
./drivers/staging/greybus/uart.c: linux/serial.h is included more than once.

Signed-off-by: Darryl T. Agostinelli <[email protected]>
Reviewed-by: Alex Elder <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
1 file changed