watchdog: imgdpc: select WATCHDOG_CORE
The imgpdc_wdt driver can be built on all architectures with CONFIG_COMPILE_TEST, but fails if no other watchdog driver is enabled: drivers/watchdog/built-in.o: In function `pdc_wdt_remove': imgpdc_wdt.c:(.text+0x74): undefined reference to `watchdog_unregister_device' This adds the normal 'select WATCHDOG_CORE' that is needed to ensure the driver always builds cleanly. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Reviewed-by: NJames Hogan <james.hogan@imgtec.com> Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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