tty: serial: qcom_geni_serial: Initialize baud in qcom_geni_console_setup

When building with -Wsometimes-uninitialized, Clang warns:

drivers/tty/serial/qcom_geni_serial.c:1079:6: warning: variable 'baud'
is used uninitialized whenever 'if' condition is false
[-Wsometimes-uninitialized]

It's not wrong; when options is NULL, baud has no default value. Use
9600 as that is a sane default.

Link: https://github.com/ClangBuiltLinux/linux/issues/395
Suggested-by: Greg Kroah-Hartman <[e-mail]>
Signed-off-by: Nathan Chancellor <[e-mail]>
Reviewed-by: Nick Desaulniers <[e-mail]>
Cc: stable <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/tty/serial/qcom_geni_serial.c

···
 {
 	struct uart_port *uport;
 	struct qcom_geni_serial_port *port;
-	int baud;
+	int baud = 9600;
 	int bits = 8;
 	int parity = 'n';
 	int flow = 'n';