When building an ARM multi_v7_defconfig with LPAE option selected we get the
following build warning:

drivers/watchdog/orion_wdt.c:272:2: warning: format '%x' expects argument of type 'unsigned int', but argument 4 has type 'phys_addr_t' [-Wformat=]

Fix it by using %pa to print 'phys_addr_t'.
Reported-by: NOlof's autobuilder <build@lixom.net>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Acked-by: NEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>