cyclic: Use schedule() instead of WATCHDOG_RESET()

Globally replace all occurances of WATCHDOG_RESET() with schedule(),
which handles the HW_WATCHDOG functionality and the cyclic
infrastructure.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Rini <trini@konsulko.com> [am335x_evm, mx6cuboxi, rpi_3,dra7xx_evm, pine64_plus, am65x_evm, j721e_evm]

env/common.c

@@ -115,7 +115,7 @@ char *env_get(const char *name)
 	if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */
 		struct env_entry e, *ep;
 
-		WATCHDOG_RESET();
+		schedule();
 
 		e.key	= name;
 		e.data	= NULL;