watchdog: pic32-wdt: Add PIC32 watchdog driver

watchdog: pic32-wdt: Add PIC32 watchdog driver

Add support for the watchdog peripheral found on PIC32 class
devices.

Signed-off-by: Joshua Henderson <[email protected]>
Signed-off-by: Purna Chandra Mandal <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Pawel Moll <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Ian Campbell <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: Wim Van Sebroeck <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/12701/
Signed-off-by: Ralf Baechle <[email protected]>