drivers/watchdog: Ignore 'No Reboot' Bit

Early versions of the SNR chip do not allow the "no reboot"
bit to be accessed.  This commit simply assumes that it is
writeable without checking in order to allow the watchdog to
but used in Linux.  This will be fixed in later versions of
the chip.

Signed-off-by: John Jacques <john.jacques@intel.com>
Signed-off-by: Daniel Dragomir <daniel.dragomir@windriver.com>
[YL: Original patch from
https://github.com/intel-collab/networking.wireless.transport.rdk.board-support.meta-intel-axxia.git

.
Use the devm_platform_ioremap_resource() helper instead of
calling platform_get_resource() and devm_ioremap_resource()
separately]
Signed-off-by: Yongxin Liu <yongxin.liu@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>