tests: watchdog: sam: Disnable Atmel SAM4L

The Atmel SAM is currently disabled from watchdog tests due to missing
SAM4L driver. However, the tests do not implement wdt_disable, which is
mandatory for SAM4L to work correctly. This disable the SAM4L platform
until the watchdog API tests are fixed.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>

Author: nandojve

tests/drivers/watchdog/wdt_basic_api/testcase.yaml

@@ -6,7 +6,8 @@ common:
 tests:
   drivers.watchdog:
     filter: >
-      not (CONFIG_WDT_SAM or dt_compat_enabled("st,stm32-window-watchdog")
+      not (CONFIG_WDT_SAM or CONFIG_WDT_SAM4L
+       or dt_compat_enabled("st,stm32-window-watchdog")
        or dt_compat_enabled("st,stm32-watchdog") or CONFIG_SOC_FAMILY_LPC or
        CONFIG_SOC_SERIES_IMXRT6XX or CONFIG_SOC_SERIES_IMXRT5XX or
        CONFIG_SOC_FAMILY_GD_GD32 or SOC_SERIES_GD32VF103)