The patch "zynqmp: Fix veloce for RTL5.4"
(sha1: dc6795b3604e1a1533e7f9eabe31a70c0fef16b4)
fixed 4800 baudrate from 9600 but misses also fix baudrate checking
condition in the driver.
This patch fixes it.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>