watchdog: of_xilinx_wdt: Skip printing pointer value

"%p" is not printing the pointer value.
In driver, printing pointer value is not useful so avoiding print.

iSigned-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210329161939.37680-6-srinivas.neeli@xilinx.com


Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>