watchdog: da9063: Add hard dependency on I2C

Commit 5ea29919c294 ("watchdog: da9063: use atomic safe i2c transfer in
reset handler") implements atomic save i2c transfer which uses i2c
functions directly. Add I2C hard dependency which overrides COMPILE_TEST.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 968011a ("watchdog: da9063: use atomic safe i2c transfer in reset handler")
Signed-off-by: Andrej Picej <andrej.picej@norik.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20211129134938.3273289-1-andrej.picej@norik.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

drivers/watchdog/Kconfig

@@ -207,6 +207,7 @@ config DA9055_WATCHDOG
 config DA9063_WATCHDOG
 	tristate "Dialog DA9063 Watchdog"
 	depends on MFD_DA9063 || COMPILE_TEST
+	depends on I2C
 	select WATCHDOG_CORE
 	help
 	  Support for the watchdog in the DA9063 PMIC.