uart: use common send_request() in gb_uart_send()
uart: use common send_request() in gb_uart_send()

Don't open-code this--use the existing helper function (and avoid bugs).

Signed-off-by: Alex Elder <f429030cf5c0faf36fac3d102073b6e63a647baa@linaro.org>
Reviewed-by: Bryan O'Donoghue <165dc05575478af93ac2f97f67be6e1756010094@linaro.org>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@google.com>

gregkh/gbsim,gregkh/gbsim,projectara/gbsim,projectara/gbsim